Unit 2 Chem

Question 1

What is a qualitative property?

Answer 1

Can be described by using the senses

Question 2

What is a Quantitative property?

Answer 2

Can be measured and include and numerical value

Question 3

What is a physical property?

Answer 3

Describes the general appearance of a substance

Question 4

What is a Chemical property?

Answer 4

Describes how a substance behaves when it comes in contact with other substances

Question 5

What is a particle theory of matter?

Answer 5

1. All matter is made of tiny particles
2. Each pure substance has its own kind of particle different from other substances
3. Particles have a force of attraction
4. Particles are always moving
5. Temperature effects the speed at which particles at

Question 6

What are the three states of matter?

Answer 6

Solid
Liquid
Gas

Question 7

What is a suspension?

Answer 7

A term to describe a mixture that look one phased mixture but over time the solid particles settle out

Question 8

How can you force a suspension?

Answer 8

By adding a emulsifier

Question 9

What is a emulsion?

Answer 9

An emulsion if a mixture that overtime over time does not separate or settle out

Question 10

What is a colloid?

Answer 10

A colloid looks a one phased mixture, but suspended don’t not settle out

Question 11

How can you distinguish colloid from a homogeneous mixture?

Answer 11

Colloid particles are longer than particles of a homogeneous mixture

Question 12

What is a pure substance?

Answer 12

Only one type of an atom or molecules

Question 13

What is a element?

Answer 13

Only one type of atom

Question 14

What is a compound?

Answer 14

2 or more different atoms

Question 15

What is a mixture?

Answer 15

Contains two or more substances

Question 16

What is homogeneous mixture?

Answer 16

A solution that looks like one phase

Question 17

What is a heterogenous mixture?

Answer 17

More then one phase can be seen

Question 18

Mechanical mixture

Answer 18

Two or more phase are very visible

Question 19

What is the formula for density?

Answer 19

Mass over volume and density

Question 20

What make up subatomic particles?

Answer 20

Protons
Electron
Neutron

Question 21

What are protons?

Answer 21

Protons have + charge

Found in the necleus

Question 22

What are electron?

Answer 22

Electrons have - charge

Found in the rings around the nucleus

Question 23

What are the neutron?

Answer 23

Has no charge

Found in nucleus

Question 24

What are the proton and electron = to?

Answer 24

The atomic number

Question 25

What are the neutron = to?

Answer 25

The rounded atomic mass

Question 26

What the atomic theory?

Answer 26

1. All elements are made up of tiny particles called atoms
2. atoms of given element are alike
3. atoms of different elements are different
4. chemical change takes takes place when atoms linkup with or separate from one another
5. Atoms are not created or destroyed by chemical or physical change

Question 27

What is vaporization?

Answer 27

Rapid change of liquid vapour into steam

Question 28

What is evaporation?

Answer 28

Conversation of liquid to gas by adding heat

Question 29

What is condensation?

Answer 29

The process of gas to liquid

Question 30

What is Sublimation?

Answer 30

Transition of a gas to solid or solid to gas

Question 31

What is grass?

Answer 31

Given 
Required 
Application 
Solution
Statement

Question 32

What are the acceptable unit?

Answer 32

Mass (kg, g)
Volume (mL, cm3, m3 L)
Density(g/mL, g/cm3, kg/m3, kg/L)