General Chemistry 1 Practice Questions (Set 2)

1) How many protons (p) and neutrons (n) are in an atom of Ac?

  • A) 89 p, 138 n
  • B) 89 p, 227 n
  • C) 138 p, 89 n
  • D) 227 p, 89 n

2) How many protons (p) and neutrons (n) are in an atom of calcium-46?

  • A) 20 p, 26 n
  • B) 20 p, 46 n
  • C) 26 p, 20 n
  • D) 46 p, 20 n

3) What is the element symbol for an atom that has 29 protons and 36 neutrons?

  • A) Cu
  • B) Kr
  • C) N
  • D) Tb

4) How many electrons are in a neutral atom of chlorine-37?

  • A) 1
  • B) 17
  • C) 18
  • D) 37

5) Identify the chemical symbol of element Q in Q.

  • A) Ar
  • B) F
  • C) Ne
  • D) O

6) An atom of 131I contains ________ neutrons.

  • A) 53
  • B) 184
  • C) 78
  • D) 124
  • E) 131

7) The mass number of an atom of 79Br is ________.

  • A) 35
  • B) 114
  • C) 44
  • D) 79
  • E) 72

8) What is the identity of element Q if the ion Q2+ contains 36 electrons?

  • A) Ge
  • B) Se
  • C) Kr
  • D) Sr

9) Give the number of neutrons in 31P3-.

  • A) 18
  • B) 12
  • C) 19
  • D) 15
  • E) 16

10) Give the number of protons in P3-.

  • A) 18
  • B) 12
  • C) 19
  • D) 15
  • E) 16

11) How many electrons are in the ion, Ni2+?

  • A) 26
  • B) 28
  • C) 30
  • D) 59
  • E) 52

12) How many electrons are in the ion, S2-?

  • A) 14
  • B) 18
  • C) 30
  • D) 34
  • E) 23

13) In which of the following sets do all species have the same number of electrons?

  • A) Cl-, Ar, Ca2+
  • B) C, N3-, O2-
  • C) K+, Rb+, Cs+
  • D) Br, Br-, Br+

14) Predict the charge that a strontium ion would have.

  • A) 6-
  • B) 2-
  • C) 4-
  • D) 2+
  • E) 1+

15) How many moles of potassium are contained in 200 g of potassium?

  • A) 5.11 moles
  • B) 0.956 moles
  • C) 13.3 moles
  • D) 10.53 moles
  • E) 6.46 moles

16) How many moles are in 2.16 × 1024 atoms of magnesium?

  • A) 35.9 moles
  • B) 3.59 moles
  • C) 0.359 moles
  • D) 7.18 moles
  • E) 0.90 moles

17) How many atoms are in 5.00 moles of O?

  • A) 4.52 × 1023 atoms
  • B) 1.51 × 1024 atoms
  • C) 5.02 × 1023 atoms
  • D) 3.01 × 1024 atoms
  • E) 3.01 × 1023 atoms

18) What mass (in kg) does 4.41 moles of copper have?

  • A) 0.352 kg
  • B) 0.122 kg
  • C) 0.820 kg
  • D) 0.280 kg
  • E) 0.632 kg

19) Which of the following is equal to exactly 1 mole of atoms?

  • A) 6.00 grams of carbon
  • B) 30.69 grams of nickel
  • C) 12.01 grams of carbon
  • D) 12.31 grams of magnesium
  • E) 34.00 grams of selenium

20) Which of the following is equal to exactly Avogadro’s number of atoms?

  • A) 8.00 grams of oxygen
  • B) 35.38 grams of zinc
  • C) 12.01 grams of carbon
  • D) 11.99 grams of sodium
  • E) 34.00 grams of selenium

General Chemistry 1 Practice Questions (Set 2)

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