1. Most of the mass of an atom is found in the
a charges
b. electrons
c. electrons cloud
d. nucleus
2. Every atom of the same element has
a. the same mass
b. the same atomic number
c. same number of neutrons
d. the same weight of an atom
3. How can atoms acquire a charge?
a by gaining or losing electrons
b. by gaining or losing protons
c. by gaining or losing neutrons
d. Atoms cannot acquire a charge
4. The sum of the mumber of protons and the number of neutrons is known as.
a. Atomic mass
b. Atomic number
c. Electron
d. Proton
5. How to compute the number of neutrons of an atom?
a. Always the same with number of proton
b. Proton is added to electron of an atom
c. The difference of atomic mass and atomic number
d. The product of electron and proton
6. The atomic number tells the
a number of electrons in the atom
b. number of protons in the atom
c. number of neutrons in the atom
d. number of protons and neutrons
7. The number of protons and neutrons in a nucleus is the
a. Atomic mass b. Atomic number c. Mass number
d. Nucleons
8. Carbon has 6 protons. How many electrons does carbon have?
b. 4
a. 2
c. 6
d. 8
9. Sodium has an atomic number of 11. How many protons does Sodium (Na) have?
b. 10
d. 12
a. 5
c. 11
10. Hydrogen has one (1) proton and electron. How many neutrons does Hydrogen have?
b. 2
d. Zero
a. 1
c. 3​