Unit 2 Quiz!

Question 1

What are atoms?

Answer 1

the smallest unit of matter

Question 2

Atoms are made up of what?

Answer 2

3 pieces and are typically NEUTRAL

Question 3

Protons:
Neutrons:
Electrons:

Answer 3

Positive
Neutral
Negative

Question 4

The nucleus of an atom is at the what?

Answer 4

The center

Question 5

What is the nucleus made of?

Answer 5

Protons and Neutrons

Question 6

What orbits the nucleus?

Answer 6

Electrons

Question 7

Examples of elements that consist of only one type of atom

Answer 7

O2
C2
H

Question 8

What is a compound?

Answer 8

A substance formed by the chemical combo of two more elements

Question 9

Examples of compounds

Answer 9

NaCI - salt (sodium chlorine)
H20 - Water
C6H12O6 - Glucose/Sugar

Question 10

When are compounds formed?

Answer 10

When these different elements are bonded together

Question 11

When are bond formed?

Answer 11

When compounds give away or share electrons in the outer shell (Valence electron)

Question 12

Bond hold energy, so what is released when they are broken?

Answer 12

Energy

Question 13

What are two different types of bonds?

Answer 13

Covalent bonds
Ionic bonds

Question 14

Ionic bonds are a type of what?

Answer 14

Chemical bond that occur when an atom transfers for gives away an electron to another atom

Question 15

Atoms are neutral until they give away what?

Answer 15

Or gain electrons

Question 16

Covalent bonds occur when?

Answer 16

two atoms share electrons