Week 1

Question 1

properties that do not depend on the amount of matter present

Answer 1

Intensive property

Question 2

properties that do depend on the amount of matter present

Answer 2

Extensive property

Question 3

Bicarb of soda is used in cooking as a leavening agent. It is also called
bicarbonate of soda. The correct formula for bicarb of soda is

Answer 3

NaHCO3

Question 4

Nitric acid is used in the manufacture of fertilizer and explosives. The
chemical formula for nitric acid is

Answer 4

HNO3

Question 5

Permanent marker ink is best separated by which process?

Answer 5

CHROMATOGRAPHY

Question 6

If you want to separate iron fillings from sand, which of the following
apparatus will you use?

Answer 6

MAGNET

Question 7

What process is used to separate heterogeneous mixtures of solids and
liquids?

Answer 7

FILTRATION

Question 8

What property of matter is being measured by placing the object in a
graduated cylinder with water and measuring how much water is displaced?

Answer 8

VOLUME

Question 9

The melting point of a solid is the temperature at which it changes state
from a solid to a liquid at a given pressure. The melting point of a substance
is the same no matter how much of the substance is present. This makes
melting point a ______ physical property.

Answer 9

INTENSIVE PROPERTY

Question 10

Matter is anything (1) _____________and volume.

Answer 10

MASS

Question 11

A (2) _________ is a form of matter
with a uniform and unchanging composition.

Answer 11

SUBSTANCE

Question 12

Substances have specific,
unchanging (3) ___________ that can be observed.

Answer 12

PROPERTIES

Question 13

(4) _________ properties can be observed without changing
a substance’s chemical composition. Color, hardness, and

Answer 13

PHYSICAL

Question 14

Color, hardness, and (5) ___________ are
examples.

Answer 14

DENSITY

Question 15

Other properties cannot be observed without changing the composition
of a substance. These are called (6) ___________ properties. An example is the
tendency of iron to form rust when exposed to air.

Answer 15

CHEMICAL

Question 16

the ability of substance to be stretched into wire.

Answer 16

DUCTILITY

Question 17

the ability of substance to be hammered or transformed into
thin sheet.

Answer 17

MALLEABILITY

Question 18

is the ability of matter to be scattered or spread out. This can be
observed when you add ink into the water.

Answer 18

DIFFUSION

Question 19

Coal is used to produce electricity by burning them to power the generator.

Answer 19

chemical property

Question 20

Water freezes at O0
C.

Answer 20

intensive property

Question 21

Salt and refined sugar are both white in color.

Answer 21

intensive

Question 22

5 kg. rice is as heavy as 5 kg. newly harvested cotton.

Answer 22

extensive property

Question 23

Silver is usually tarnished when exposed to air forming silver oxide.

Answer 23

chemical property

Question 24

Boiling point of water

Answer 24

intensive property

Question 24

Color of the paper

Answer 24

intensive property

Question 24

Combustibility of plastic

Answer 24

physical property

Question 24

Length of paper

Answer 24

extensive property

Question 25

Mass of the paper

Answer 25

extensive property

Question 26

ability to dissolve in a given solvent

Answer 26

solubility

Question 27

Glycerol (Glycerin)

Answer 27

C3 H8 O3

Question 28

salt (sodium chloride)

Answer 28

NACl

Question 29

Clorox (Sodium Hypochlorite)

Answer 29

NaCl0

Question 30

Ammonia (Nitrogen Trihdride)

Answer 30

NH3

Question 31

Chemical substances used for chlorinating swimming pools

Answer 31

Hypochlorites

Question 31

Baking Powder ( sodium Bicarbonate)

Answer 31

NaHCO3

Question 32

anesthetic that is used for minor surgery and is also known as laughing gas

Answer 32

Nitrous oxide (N2O)

Question 33

Used to make cakes and other baked products rise from the oven

Answer 33

Sodium bicarbonate

Question 34

Process of separating a solid-liquid mixtures by pouring

Answer 34

decantation

Question 35

separating components of a mixture that have differing absorptive tendencies on a stationary phase as the mixture passes over or through the stationary phase

Answer 35

chromatography

Question 36

separating insoluble liquid from a liquid using a filter paper

Answer 36

filtration

Question 37

heating the solution until the solvent evaporates (turns into gas) leaving behind the solid residue

Answer 37

evaporation

Question 37

separating based on boiling point

Answer 37

distillation

Question 38

used to separate a magnetic solid from a heterogeneous mixture

Answer 38

magnetic separation

Question 39

Table sugar

Answer 39

sucrose (C12H22O11)

Question 40

vinegar

Answer 40

acetic acid (CH3COOH)

Question 41

ALCOHOL

Answer 41

ETHANOL (C2H6O)

Question 42

SALT

Answer 42

SODIUM CHLORIDE (NACL)

Question 43

contains surfactants, which are substances with cleaning properties. Surfactants have long water-insoluble hydrocarbon tail and water-soluble polar heads.

Answer 43

DETERGENT

Question 43

BAKING POWDER

Answer 43

SODIUM BICARBONATE (NAHCO3)

Question 44

a household cleaning agent used to remove dyes and whiten clothing.

Answer 44

BLEACH

Question 45

is used to emit fragrance in different spaces at home, especially in restrooms.

Answer 45

AIR FRESHENER OR PURIFIER

Question 46

is an antimicrobial household product. It kills microorganisms on surfaces of inanimate objects.

Answer 46

DISINFECTANT