Question and answer list
Each item is a 4-option MCQ. Open a question, tap A–D. Green is correct, red is wrong. Original US classroom practice — not a state test copy.
1. Grade 10 science — atoms: practice check 10 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
2. Grade 10 science — atoms: practice check 11 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
3. Grade 10 science — atoms: practice check 12 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
4. Grade 10 science — atoms: practice check 13 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
5. Grade 10 science — atoms: practice check 14 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
6. Grade 10 science — atoms: practice check 15 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
7. Grade 10 science — atoms: practice check 16 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
8. Grade 10 science — atoms: practice check 17 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
9. Grade 10 science — atoms: practice check 18 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
10. Grade 10 science — atoms: practice check 19 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
11. Grade 10 science — atoms: practice check 20 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
12. Grade 10 science — atoms: practice check 21 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
13. Grade 10 science — atoms: practice check 22 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
14. Grade 10 science — atoms: practice check 23 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
15. Grade 10 science — atoms: practice check 24 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
16. Grade 10 science — atoms: practice check 25 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
17. Grade 10 science — atoms: practice check 26 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
18. Grade 10 science — atoms: practice check 27 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
19. Grade 10 science — atoms: practice check 28 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
20. Grade 10 science — atoms: practice check 29 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
21. Grade 10 science — atoms: practice check 30 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
22. Grade 10 science — atoms: practice check 31 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
23. Grade 10 science — atoms: practice check 32 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
24. Grade 10 science — atoms: practice check 33 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
25. Grade 10 science — atoms: practice check 34 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
26. Grade 10 science — atoms: practice check 35 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
27. Grade 10 science — atoms: practice check 36 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
28. Grade 10 science — atoms: practice check 37 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
29. Grade 10 science — atoms: practice check 38 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
30. Grade 10 science — atoms: practice check 39 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
31. Grade 10 science — atoms: practice check 40 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
32. Grade 10 science — atoms: practice check 41 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
33. Grade 10 science — atoms: practice check 42 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
34. Grade 10 science — atoms: practice check 43 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
35. Grade 10 science — atoms: practice check 44 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
36. Grade 10 science — atoms: practice check 45 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
37. Grade 10 science — atoms: practice check 46 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
38. Grade 10 science — atoms: practice check 47 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
39. Grade 10 science — atoms: practice check 48 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
40. Grade 10 science — atoms: practice check 49 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
41. Grade 10 science — atoms: practice check 50 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
42. Grade 10 science — atoms: practice check 51 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
43. Grade 10 science — atoms: practice check 52 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
44. Grade 10 science — atoms: practice check 53 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
45. Grade 10 science — atoms: practice check 54 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
46. Grade 10 science — atoms: practice check 55 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
47. Grade 10 science — atoms: practice check 56 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
48. Grade 10 science — atoms: practice check 57 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
49. Grade 10 science — atoms: practice check 58 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
50. Grade 10 science — atoms: practice check 59 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
51. Grade 10 science — atoms: practice check 60 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
52. Grade 10 science — atoms: practice check 61 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
53. Grade 10 science — atoms: practice check 62 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
54. Grade 10 science — atoms: practice check 63 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
55. Grade 10 science — atoms: practice check 64 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
56. Grade 10 science — atoms: practice check 65 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
57. Grade 10 science — atoms: practice check 66 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
58. Grade 10 science — atoms: practice check 67 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
59. Grade 10 science — atoms: practice check 68 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
60. Grade 10 science — atoms: practice check 69 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
61. Grade 10 science — atoms: practice check 70 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
62. Grade 10 science — atoms: practice check 71 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
63. Grade 10 science — atoms: practice check 72 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
64. Grade 10 science — atoms: practice check 73 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
65. Grade 10 science — atoms: practice check 74 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
66. Grade 10 science — atoms: practice check 75 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
67. Grade 10 science — atoms: practice check 76 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
68. Grade 10 science — atoms: practice check 77 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
69. Grade 10 science — atoms: practice check 78 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
70. Grade 10 science — atoms: practice check 79 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
71. Grade 10 science — atoms: practice check 80 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
72. Grade 10 science — atoms: practice check 81 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
73. Grade 10 science — atoms: practice check 82 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
74. Grade 10 science — atoms: practice check 83 — the reliable next step is
Tap A, B, C or D.
Answer: A) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
75. Grade 10 science — atoms: practice check 84 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
76. Grade 10 science — atoms: practice check 85 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
77. Grade 10 science — atoms: practice check 86 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
78. Grade 10 science — atoms: practice check 87 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
79. Grade 10 science — atoms: practice check 88 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
80. Grade 10 science — atoms: practice check 89 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
81. Grade 10 science — atoms: practice check 90 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
82. Grade 10 science — atoms: practice check 91 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
83. Grade 10 science — atoms: practice check 92 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
84. A proton has a charge of
Tap A, B, C or D.
Answer: A) +1
Electrons are −1; neutrons are 0.
85. Isotopes of an element have the same
Tap A, B, C or D.
Answer: A) number of protons, different neutrons
Carbon-12 and carbon-14 are isotopes.
86. A group (column) on the periodic table shares
Tap A, B, C or D.
Answer: D) similar chemical properties
Noble gases are Group 18.
87. A period is a
Tap A, B, C or D.
Answer: C) row
Period 2 has Li through Ne.
88. An ion is an atom that
Tap A, B, C or D.
Answer: C) has gained or lost electrons
Na⁺ lost one electron.
89. A covalent bond
Tap A, B, C or D.
Answer: B) shares electrons
H₂O has covalent bonds.
90. An ionic bond typically forms between
Tap A, B, C or D.
Answer: C) a metal and a nonmetal
NaCl is ionic.
91. Valence electrons are
Tap A, B, C or D.
Answer: D) in the outermost shell and drive bonding
The group number often hints at valence count for main groups.
92. Grade 10 science — atoms: practice check 1 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
93. Grade 10 science — atoms: practice check 2 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
94. Grade 10 science — atoms: practice check 3 — the reliable next step is
Tap A, B, C or D.
Answer: C) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
95. Grade 10 science — atoms: practice check 4 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
96. Grade 10 science — atoms: practice check 5 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
97. Grade 10 science — atoms: practice check 6 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
98. Grade 10 science — atoms: practice check 7 — the reliable next step is
Tap A, B, C or D.
Answer: D) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
99. Grade 10 science — atoms: practice check 8 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
100. Grade 10 science — atoms: practice check 9 — the reliable next step is
Tap A, B, C or D.
Answer: B) try the item, then read the tip
Original GKSchools practice — not a state exam leak. Come back tomorrow; order rotates.
