Properties Of Matter

Question 1

Formula for density, mass and volume

Answer 1

Mass=density×volume
Density=mass÷volume
Volume= mass÷volume

Question 2

When is water it’s most dense

Answer 2

Water is most dense at 4°C (39°f)

Question 3

Definition of matter

Answer 3

Anything that has weight and occupies up space

Question 4

An atom is mainly composed of what 3 particles what charge do they carry

Answer 4

Protons(positive)
Electrons(negative)
Neutron(neutral)

Question 5

A compound is created when?

Answer 5

When atoms of two or more different elements chemically combine EX water is a combination of hydrogen and oxygen

Question 6

When matter is only composed of one atom it is called?

Answer 6

An element

Question 7

What are 3 common properties of metal?

Answer 7

Malleability, ductility and conductivity

Question 8

What compound is one of the most abundant?

Answer 8

Water H²O

Question 9

What are these compound is CH4, C3H8, and C4H10

Answer 9

CH4=Natural gas
C3H8=propane
C4H10=butane

Question 10

What is a mixture

Answer 10

molecules of different materials combined in a way that no chemical reaction takes place

Question 11

What is a solution

Answer 11

Mixtures in which one substance is dissolved by another evenly, so the whole mixture is the same throughout (homogeneous)

Question 12

2 parts of a solution, what are they and what do they do

Answer 12

Solute, it is dissolved
Solvent does the dissolving

Question 13

Define brittle

Answer 13

Will not bend without breaking

Question 14

Define ductile

Answer 14

Ability to be stretched or drawn into shape

Question 15

Define malleable

Answer 15

Can be beaten,rolled or squeezed into shape

Question 16

Define adhesion

Answer 16

Unlike molecules stick together

Question 17

Define capillary action

Answer 17

Tendency for adhesive liquids to flow into tight spaces

Question 18

Define surface tension

Answer 18

Surface skin forms on liquids due to cohesive forces

Question 19

Define cohesion

Answer 19

Like molecules stick together

Question 20

Define compressible and incompressible

Answer 20

Able to occupy smaller volume when forced by additional pressure
Can’t be compressed to reduce volume

Question 21

Define diffusion

Answer 21

Are able to spread when not under containment

Question 22

Solid to liquid is called

Answer 22

Fusion

Question 23

Liquid to gas is called

Answer 23

Vaporization

Question 24

Gas to liquid is call

Answer 24

Condensation

Question 25

Liquid to solid is called

Answer 25

Solidifcation

Question 26

A solid to gas is call

Answer 26

Sublimation

Question 27

Difference between physical and chemical change

Answer 27

Physical changes do not affect the chemical composition of a substance

Chemical changes will produce a new substance or one with different characteristics

Question 28

When water changes to steam how much does it’s volume increase

Answer 28

1700x

Question 29

Minescus in mercury will be?

Answer 29

A reverse minscuis a convex surface tension (sad face)

Question 30

Meniscus in water will be

Answer 30

A concave meniscus

Question 31

Define density

Answer 31

The mass of a substance per unit volume ( density of water is 1000kg/m³ or 62.4lb/ft³)

Question 32

Density of air and water

Answer 32

Air 0.076lb/ft³ or 1.29kg/m³
Water 62.4lbs/ft³ or 1000kg/m³

Question 33

Define relative density as it applies to solids and liquids. What is it for gases

Answer 33

The density of a solid or liquid relative to the equal volume of water RD 1
The density of gases relative to the equal volume of air RD of 1

Question 34

Relative density of gases are what?

Answer 34

Compared to the RD of air, which is 1 eg: propane gas, an RD of 1.5, meaning it’s 1.5 times heavier than air

Question 35

What is the relative density of mercury

Answer 35

13.6

Question 36

Define buoyancy

Answer 36

The force acting on any object immersed in a liquid

Question 37

3 laws of buoyancy

Answer 37

1: A body sinks in a fluid if the mass of the fluid displaced is less than the mass of the body
2:If a body displaces a mass of fluid greater than it’s own it will float
3: A body remains in equilibrium, neither rising nor sinking if the mass of fluid it displaces is equal to its own mass