chemistry mod 3

Question 1

refers to a compound or substance

Answer 1

chemical

Question 2

refers to the symbolic expression

Answer 2

formula

Question 3

symbolic expression of a compound or substance.

Answer 3

chemical formula

Question 4

also described as shorthand of expressing the types and the number of atoms in a substance

Answer 4

chemical formula

Question 5

also tells the number of each type of atom and the central atom of the molecule specifically if it is not a diatomic molecule

Answer 5

chemical formula

Question 6

final good that is bought by individuals or households for personal use. it is something that we cannot live without

Answer 6

consumer product

Question 7

is an important kitchen product that occurs sodium lauryl ether sulfate and linear alkybenzene sulphonic acid as anionic surfactant

Answer 7

dishwashing liquid detergent

Question 8

the types of ingredients in dishwashing detergent can be broken down into two categories:

Answer 8

active ingredients and inactive ingredients

Question 9

is the active ingredient in dishwashing detergent. its primary purpose is to stop the growth f bacteria, mildew and fungi

Answer 9

triclosan

Question 10

have special properties when compared to other elements that make them suitable for making many useful things to make our daily lives comfortable

Answer 10

metals

Question 11

is a metal made by combining two or more metallic elements

Answer 11

alloy/ metallic alloys

Question 12

is a transparent, brittle and hard material that can be used in a variety of ways

Answer 12

glass

Question 13

is a grey powdery substance that when made wet and allowed to dry sets to form a mass that is as hard as rock

Answer 13

cement

Question 14

one of the most common and very useful man made material

Answer 14

plastic

Question 15

are prepared by hydrolysis of vegetable oils in the presence of alkalis

Answer 15

soaps

Question 16

are applied on walls and metal surfaces to prevent corrosion. contains pigment, a vehicle and a thinner

Answer 16

paints

Question 17

is a colored material

Answer 17

pigment

Question 18

as crops and plants are grown again and again in the same soil, the soil loses all nutrients. these nutrients are replaced by using?

Answer 18

fertilizers

Question 19

are used to kill these pests and improve the yield

Answer 19

pesticides and fungicides

Question 20

are used to kill rodents

Answer 20

rodenticides

Question 21

is a substance whose use is recommended by doctors to bring about a desired biochemical change in the body

Answer 21

drug or medicine

Question 22

specific categories of drugs

Answer 22

analgesics, anti-pyretics, and antibiotics

Question 23

used to reduce pain

Answer 23

analgesics

Question 24

used to reduce fever

Answer 24

anti-pyretics

Question 25

used to control infections

Answer 25

antibiotics

Question 26

are obtained by the action of concentrated sulfuric acid on some petroleum products. it resemble soaps in action with the major difference being that they do not form insoluble salts with hard water

Answer 26

detergents

Question 27

uses of cement

Answer 27

mortar, concrete, and reinforced concrete

Question 28

paste of sand, cement and water used in between bricks

Answer 28

mortar

Question 29

mixture of stone chips

Answer 29

concrete

Question 30

framework of closely laid iron bars is filled with wet cements, sand, and gravel

Answer 30

reinforced concrete

Question 31

useful metals

Answer 31

iron, aluminum, copper, gold, silver, platinum