1.3 PROPERTIES OF MATTER

Question 1

the 2 categories of the the PROPERTIES of Matter

Answer 1

1. PHYSICAL Properties

2. CHEMICAL Properties

Question 2

PHYSICAL PROPERTIES

Answer 2

can be observed,measured WITHOUT CHANGING the identity and the composition of the substance.

Properties that do not change the chemical nature of matter

Question 3

e.g. PHYSICAL PROPERTIES are

Answer 3

1. color
2. odor
3. density
4. melting point
5. boiling point
6. hardness

Question 4

CHEMICAL PROPERTIES

Answer 4

Can only be observed when a substance is changed into another substance ( new substance is form through a reaction)

Question 5

e.g. of a chemical property

Answer 5

flammability : the ability of a substance to burn in the presence of oxygen
Corrosiveness
Reactivity with acid

Question 6

INTENSIVE PROPERTIES

Answer 6

Properties that do not depend on the amount of the matter present. Can be used to identify substances.

Question 7

egs of intensive properties

Answer 7

Color
Odor
Luster - How shiny a substance is.
Malleability - The ability of a substance to be beaten into thin sheets.
Ductility - The ability of a substance to be drawn into thin wires.
Conductivity - The ability of a substance to allow the flow of energy or electricity.
Hardness - How easily a substance can be scratched.
Melting/Freezing Point - The temperature at which the solid and liquid phases of a substance are in equilibrium at atmospheric pressure.
Boiling Point - The temperature at which the vapor pressure of a liquid is equal to the pressure on the liquid (generally atmospheric pressure).
Density - The mass of a substance divided by its volume

When observed They help to determine what an item is. Useful for identifying unknown substances

Question 8

EXTENSiVE properties

Answer 8

Depend on the amount of substance present

Question 9

Eg of extensive properties

Answer 9

Mass
Volume
Energy
Etc

Question 10

2 form of changes a substance can undergo

Answer 10

Either

1. physical changes
2. chemical changesl

Question 11

PHYSICAL CHANGE

Answer 11

A substance changes its physical appearance but not its composition. that is it is the same substance before and after the change

Eg. water evaporation

ALL CHANGES OF STATE are physical changes

Temperature
Volume

Question 12

CHEMICAL CHANGE

Answer 12

AKA A CHEMICAL REACTION

. A substance is transformed into a chemically different substance

Combustion
Oxidation
Decomposition

Question 13

3 ways of separating a mixture

Answer 13

1. FILTRATION
2. DISTILLATION
3. CHROMATOGRAPHY

Question 14

FILTRATION

Answer 14

Filtration is the process of separating suspended solid matter from a liquid( or solution)by causing the latter to pass through the pores of some substance, called a filter

PHYSICAL SEPaRATION (

Question 15

DISTILLATION

Answer 15

A process that depends on the different abilities of substances to form gases.

It separates the components of homogeneous mixtures

the process of evaporating or boiling a liquid and condensing its vapor

**It uses the differences in the boiling points of substances to separate a homogeneous mixture into its components

Question 16

CHROMATOGRAPHY

Answer 16

Separates substances on the basis of the differences in solubility in solvent