Atom+Quiz

media type="custom" key="11862286"

Name Student number Paper numbered 1-5 down the left side Write the letter of the best answer for each question.

1. An atom's mass number is 210 and its atomic number is 100. How many neutrons does the atom have?

a. 85 b. 110 c. 210 d. 295

2. Think about a wooden chair and a balloon. What do these two objects always have in common? a. Both are made of atoms. b. Both have the same mass number. c. Both are made of the same kind of atom. d. Both are made of the same number of atoms.

3. Calcium is an element. What is the smallest particle of calcium that has all the chemical properties of calcium? a. an atom of calcium b. a proton from a calcium atom c. an electron from a calcium atom d. a molecule that contains calcium

4. Where is the nucleus located in and atom? a. in the electron cloud b. in the neutron c. in the center of the atom d. on the edge of the atom

5. Out of the main parts of an atom, which has the smallest mass? a. proton b. electron c. neutron d. nucleus

media type="custom" key="11893364"