Ch 2: Atomic Structure and Theory

Question 1

Define: electrons

Answer 1

Small, negatively charged subatomic particles that orbit around an atom’s positively charged nucleus.

Question 2

Define: proton

Answer 2

Positively charged particles in the nucleus of an atom.

Question 3

Define: neutrons

Answer 3

Subatomic particles with a smaller mass than their partner proton in the nucleus, but with no electrical (+ or -) charge.

Question 4

Give the symbol and mass of an Electron

Answer 4

e- | 9.11 x 10 to the -28

Question 5

Give the symbol and mass of a Proton

Answer 5

p+ | 1.675 x 10 to the -24

Question 6

Give the symbol and mass of a Neutron

Answer 6

n | 1.675 x 10 to the -24

Question 7

Define: molecule

Answer 7

A composition of atoms which are chemically bonded by attractive forces.

Question 8

Define: molecular formula

Answer 8

A method of writing a substance’s exact number of different atoms

Question 9

Define: structural formulas

Answer 9

A diagram which shows how specific atoms are arranged and bonded in a compound

Question 10

How much more mass does a proton have than an electron?

Answer 10

Roughly double

Question 11

What are the 3 components of an atom?

Answer 11

Electrons and nucleus (protons and neutrons)