Unit B 1.2

Question 1

Solid to gas

Answer 1

Sublimation

Question 2

Gas to solid

Answer 2

Deposition

Question 3

Solid to liquid

Answer 3

Melting

Question 4

Liquid to gas

Answer 4

Evaporation

Question 5

Gas to liquid

Answer 5

Condensation

Question 6

Liquid to solid

Answer 6

Freezing

Question 7

What are the two types of properties?

Answer 7

Physical and chemical

Question 8

physical properties of matter

Answer 8

Color, Lustre, melting point, boiling point, hardness, malleability, ductility, crystal shape, solubility, density, conductivity

Question 9

Temperature at which a substance changes from a solid to a liquid

Answer 9

Melting point

Question 10

The temperature at which a substance changes from a liquid to a gas

Answer 10

Boiling point

Question 11

Hardness

Answer 11

A substances ability to resist being scratched. Measured on Mohs’ hardness scale from 1 to 10

Question 12

Malleability

Answer 12

A substance that can be pounded or rolled into sheets is said to be malleable

Question 13

Ductility

Answer 13

Any solid that can be stretched into a long wire is said to be ductile. The most common example of a ductile material is copper

Question 14

Crystal shape

Answer 14

The shape of a substance is crystals can help identify it. For example salt crystals form cubes

Question 15

Solubility

Answer 15

The ability of a substance to be dissolved in another

Question 16

Density

Answer 16

The amount of mass in a given volume

Question 17

Conductivity

Answer 17

The ability of a substance to conduct electricity or heat

Question 18

Examples of chemical properties

Answer 18

Reaction to acids, ability to burn, reaction with water, behavior in air, reaction to heat

Question 19

Difference between chemical property and physical property

Answer 19

Chemical property describes how a substance interacts with other substances.physical properties are how a substance physically looks feels smells tastes etc.

Question 20

Element versus compound

Answer 20

Elements are the basic building blocks for compounds. Elements cannot be broken down further but compounds can. For example water, H2O, can be broken down to two hydrogen Adams and one oxygen Atom

Question 21

Suspensions versus colloids

Answer 21

While they both are cloudy mixtures and which tiny particles are suspended in a liquid, suspensions separate but colloids can’t

Question 22

Aqueous solution

Answer 22

A substance dissolved in water

Question 23

Mechanical mixture

Answer 23

The different substances that make up the mixture are visible. A.k.a. heterogeneous

Question 24

Solution

Answer 24

The different substances that make up the mixture are not separately visible. A.k.a. homogenous