PHYSICAL AND CHEMICAL CHANGE

Question 1

Properties are determined by changing the identity of the substance?

Answer 1

Chemical Properties
Substance Reacts to the presence of:
Air
Acid
Base
Water
Other Chemical

Question 2

Determined without changing the identity of the substance

Answer 2

Physical Properties ( two types Intensive and Extensive)

Question 3

Does not depend on the amount of substance

Answer 3

Intensive Physical Property
Color
Melting Point
Boiling Point
Density

Question 4

Depends on the amount of substance

Answer 4

Extensive Physical Property
Mass
Volume Length
Shape

Question 5

Can be measured or observed without changing the identity and composition of the substance. Describes the physical characteristics of the substance.

Answer 5

Physical Properties (color, odor, taste, state of matter, density, melting point, boiling point, mass, volume, malleability( to be molded), solubility( to dissolve) and hardness)

Question 6

How to determine Physical Properties

Answer 6

Using the five senses
A description of a object

Question 7

Malleability

Answer 7

Ability to be pounded into thin sheets
Ex. Aluminum can be rolled or pounded into sheets to make foil.

Question 8

Ductility

Answer 8

Ability to be drawn or pulled into a wire
Ex. Copper in wiring soldering wires or joints

Question 9

Are determined by a substance’s ability to with other substances, React

Answer 9

Chemical Properties

Question 10

Chemical Properties ( Flammable, Radioactive, Oxidizer, Corrosive, Combustible, Toxic , Explosive and Pyrophoric)

Answer 10

Describes how that substance’s chemical composition will change given a specific set of conditions.

Question 11

How it will change or react to other substances.

Answer 11

Chemical Properties

Question 12

Change in substance that involves a change in the identity or chemical make up of that substance.

Answer 12

Chemical Changes( fermentation(sugar to alcohol), oxidation(iron nail - rusty nail), combustion(logs to burning logs). electrolysis(water to H2 and 02 gases)

Question 13

All chemical changes are accompanies by a

Answer 13

Physical Change

Question 14

Ability to react with air

Answer 14

Rust, Tarnish, Corrode, Rot

Question 15

Ability to catch fire

Answer 15

Flammability

Question 16

Hardness of a Diamond

Answer 16

Physical Property

Question 17

Mass of 2 camels

Answer 17

Physical

Question 18

Wood to burn

Answer 18

Chemical

Question 19

Nail to rust

Answer 19

Chemical

Question 20

Do not depend on the amount of sample being examined. it is useful in chemistry because many intensive properties can be used to identify substances

Answer 20

Intensive Properties ( temperature boiling point, melting point, density)

Question 21

Amount of the substance present

Answer 21

Extensive properties ( mass , volume, size, weight, length)