Pre Chapter 4

Question 1

Elements with different numbers of neutrons are called

Answer 1

Isotopes

Question 2

Matter is

Answer 2

any substance that has mass and takes up space

Question 3

The nucleus of an atom contains

Answer 3

protons and neutrons

Question 4

The smallest unit of matter that retains all chemical properties of an element is a(n)________________.

Answer 4

atom

Question 5

Atoms with a full outer electron shell will form chemical bonds with other atoms.
T or F

Answer 5

False

Question 6

Match the subatomic particle with its charge.
(Proton, electron, neutron)

Answer 6

Proton +1

Electron -1

Neutron 0

Question 7

How many covalent bonds can each form?
H
O
N
C

Answer 7

H: 1
O: 2
N: 3
C: 4

Question 8

Match the type of bond with its description.

Ionic bond
Covalent
Hydrogen bond

Answer 8

Ionic bond: an attraction between a positively charged atom or molecules with a negatively charged molecule

Covalent: Atoms SHARING pairs of electrons

Hydrogen bond: an attraction between a slightly positive and a slightly negative particle (weakest bond)

Question 9

Atoms with a full outer electron shell will form chemical bonds with other atoms.
T or F

Answer 9

False

Question 10

Electronegativity is:

Answer 10

the tendency of an atom to attract electrons