Term 3 exam revision

Question 1

Particles close together but held in position is a:

Answer 1

A solid

Question 2

Particles close together and vibrating, but held in position

Answer 2

Solid

Question 3

Particles are close together but move freely around one another is:

Answer 3

Liquid

Question 4

Particles that are spaced out but move in random directions are a:

Answer 4

Gas

Question 5

what are some signs of chemical changes?

Answer 5

1. absorbs and releases heat
2. smell
3. light
4. colour
5. change in structure
6. new substance formed

Question 6

What is it called when a solid –> gas?

Answer 6

sublimation

Question 7

What is it called when a gas –> solid?

Answer 7

deposition

Question 8

what is the process from the element to the mixture?

Answer 8

Reactants –> (reaction) –> products

Question 9

KQ: What is it called when a gas –> liquid?

Answer 9

condensation

Question 10

smallest to biggest in terms of atoms:

Answer 10

Element –> compound –> mixture

Question 11

The atomic number of the element is the __ in the atom.

Answer 11

number of protons/electrons

Question 12

chemical change vs physical change

Answer 12

Chemical change usually cannot be undone, whereas physical usually can

Question 13

What is the atomic number the same as?

Answer 13

Protons and electrons

Question 14

how do you find the neutrons in an element?

Answer 14

atomic mass-atomic number

Question 15

matter with a set volume but not shape is a:

Answer 15

Liquid

Question 16

matter with a set volume and shape is a:

Answer 16

Solid