matter

Question 1

define matter

Answer 1

matter is anything that takes of space and has a mass

Question 2

what’s the particle theory

Answer 2

1. all matter is made up up tiny particles
2. particles of a pure substance are identical
3. particles are in constance movement
4. particles at high temperature move faster and particles are a low temperature move slower
5. particles attract each other

Question 3

define change of state

Answer 3

is the change of a substance from one physical from to another

Question 4

what are the three states of matter

Answer 4

liquid, solide, gas

Question 5

solids

Answer 5

-have a definite volume and shape
- does not take the shape of a container
- particles are held tighter, held tightly together, and vibrate slowly

Question 6

liquids

Answer 6

• have a definite volume but no definite shape
• does take the shape of an container
• particles are farther apart, held together loosely, and move freely

Question 7

gases

Answer 7

-have no definite volume or shape
- does take the shape of a container
-particles are far apart, not held together, are free

Question 8

when a substance change from one state to another energy is

Answer 8

lost or gained

Question 9

energy gained =
energy lost =

Answer 9

speed up (higher temp)
slowed down (lower temp)

Question 10

liquefaction

Answer 10

solid to liquid
(temperature increases)

Question 11

solidification

Answer 11

liquid to solid
temperature decreases

Question 12

evaporation

Answer 12

liquid to gas
temperature increases

Question 13

condensation

Answer 13

gas to liquid

Question 14

sublimation

Answer 14

gas to solid
temperature decrease

solid to gas
energy is added temperature increases

Question 15

examples of an element

Answer 15

oxygene, gold, Cooper mercury

Question 16

examples of a compound

Answer 16

salt, alcohol, sugar, chalk

Question 17

what are the six possible kinds of mixtures

Answer 17

mixture of gases
mixture of liquids
mixture of solids
mixture of gases in a liquid
mixture of solids in a liquid
mixture of solids and gases

Question 18

atoms link together to make

Answer 18

molecules

Question 19

are there more compounds or elements

Answer 19

compounds

Question 20

the solute in a solution can be

Answer 20

any state of matter

Question 21

in solution of liquids and soil or liquid as gas which is always the solute

Answer 21

liquids

Question 22

an example of a solution

Answer 22

sugar water

Question 23

solute and solvent

Answer 23

solute = usually the things the dissolves (ex. sugar)
solvent = is usually a liquid (ex. water)

solute dissolves/ disappears in the solvent

Question 24

when is a mixture consider a solution

Answer 24

if the solute dissolves and spreads out evenly

Question 25

is white out a M or P

Answer 25

pure substance

Question 26

is brass and M or P

Answer 26

Mixture

Question 27

is honey M or P

Answer 27

pure substance

Question 28

is glass M or P

Answer 28

pure substance

Question 29

examples of homogenous mixtures

Answer 29

water, air, milk

Question 30

examples of heterogenous mixtures

Answer 30

sand, salt and pepper, water and ice

Question 31

qualitative

Answer 31

properties that are observed with the senses sight, smell, touch, taste, hear

Question 32

quantitative

Answer 32

properties that are measured always have a number or unit

Question 33

characteristics of qualitative properties

Answer 33

1. state 2. colour 3. odour 4. taste 5. clarity (how light passes through) 6. lustre (shinny) 7. hardness 8. texture 9.malleability 10. ductility (ability to stretch) 11. viscosity 12. form

Question 34

quantitative properties

Answer 34

1. mass 2. length width height 3. volume 4.solubility (how much it dissolves) 5. melting pint 6. boiling point 7. density

Question 35

what is the difference between and physical and chemical change

Answer 35

in a physical change there is no change in the way atmosphere link up as well as no energy is taking in or reached during a physical change with the exception of changes of states

Question 36

does a chemical reaction cause a chemical change

Answer 36

yes

Question 37

do substances that take part in chemical reactions keep their properties

Answer 37

no

Question 38

example of physical changes

Answer 38

change of state, dissolving cutting up (ex. melting sugar, evaporation of water, mixing salt and pepper)

Question 39

example of chemical changes

Answer 39

combustion ( burning) corrosion (rusting) (ex. baking a cake, rusting of an iron, electrolysis of water)

Question 40

clues that indicate a chemical change

Answer 40

change in colour change in temperature produces gad bubbles produces light

Question 41

define chemical properties and give 3 examples

Answer 41

A chemical property is a characteristic of a particular substance that can be observed in a chemical reaction flammability, toxicity, heat of combustion