physics

Question 1

nitrate

Answer 1

NO3

Question 2

ammonium

Answer 2

NH4

Question 3

sulphate

Answer 3

SO42

Question 4

hydroxide

Answer 4

OH

Question 5

phosphate

Answer 5

PO43

Question 6

Carbonate

Answer 6

CO32

Question 7

bicarbonate

Answer 7

HCO3

Question 8

caustic sugar

Answer 8

sodium hydroxide

NaOH

Question 9

plaster of paris

Answer 9

calcium sulphate

(CaSo4).5 H2O

Question 10

blue vitriol

Answer 10

copper sulphate

CuSo4 5H2O

Question 11

washing soda

Answer 11

sodium carbonate

Na2Co3 10H2O

Question 12

chalk

Answer 12

calcium carbonate

CaCo3

Question 13

atom

Answer 13

smallest unit of matter
take part in chemical equation
can’t be broken down

Question 14

molecule

Answer 14

combination of atoms
retains characteristics
smallest unit E,C to exist

Question 15

element

Answer 15

pure substance
can’t be broken down
1 type of atom
block on periodic table

Question 16

compound

Answer 16

pure
2 or more E bonded chemically 
can’t separate by physical means
new substance formed
bonded in fixed ratio
strong chemical bonds
energy is released

Question 17

mixture

Answer 17

2 or more substances
has total properties of all substance 
recognize particles
loosely bonded
no energy change

Question 18

emulsion

Answer 18

emulsifier added
enable 2 immiscible liquids to mix
mayonnaise

Question 19

suspension

Answer 19

insoluble small solid particles
in liquid
sea salt and sea water

Question 20

solution

Answer 20

mixture

solid dissolved in liquid

Question 21

solvent

Answer 21

liquid

Question 22

solute

Answer 22

substance

that dissolves in liquid

Question 23

halogens

Answer 23

group 7
1 electron short
bond with group 1
\+element- Halide
NaCl

Question 24

noble gasses

Answer 24

group 8
full shells
rarely bond
not solid at room temp
un reactive

Question 25

alkali metals

Answer 25

group 1 1 electron short wants to bond oxides from alkali solutions

Question 26

alkali earth metals

Answer 26

Group 2 mixed in solutions ph 7+

Question 27

Transition metals

Answer 27

take+give off electrons randomly cannot predict roman numerals indicate

Question 28

hydrochloric acid

Answer 28

HCl

Question 29

Sulphuric acid

Answer 29

H2SO4

Question 30

Nitric acid

Answer 30

HNO3

Question 31

acid+metal

Answer 31

hydrogen+salt

Question 32

acid+metallic oxide

Answer 32

water+salt

Question 33

acid+hydroxide

Answer 33

water+salt

Question 34

acid+carbonates

Answer 34

salt+water+carbon dioxide

Question 35

acids

Answer 35

sharp taste corrosive ph 0-7

Question 36

Base

Answer 36

soapy feel corrosive ph 7-14

Question 37

newtons first law

Answer 37

``` object rest-stay rest object motion-stay motion same speed+direction unless acted upon by unbalanced force ```

Question 38

force

Answer 38

push pull twist exerted on object

Question 39

measured

Answer 39

Newtons

Question 40

can change

Answer 40

shape direction speed

Question 41

2 groups

Answer 41

contact | field

Question 42

types of contact

Answer 42

friction tension compression

Question 43

effects of contact force

Answer 43

``` object move speed- up or down change- direction - shape rotate ```

Question 44

field force

Answer 44

action at distance | between 2 bodies

Question 45

common field force

Answer 45

gravitational magnetic electrostatic

Question 46

Gravitational force

Answer 46

force of attraction | objects have on one another due to mass

Question 47

greater mass

Answer 47

greater gravitational force

Question 48

gravitational force decreases

Answer 48

move further away from one another

Question 49

equation

Answer 49

Fg=mg