evry thing

Question 1

what defines a pure substance

Answer 1

elements and compounds

Question 2

what defines a mixture

Answer 2

a mechanical mixture or a solution

Question 3

what is a homogenius matter

Answer 3

a homogenius matter is a matter that has the same propertys thru the who sample elements or compounds are always homogenius (mixtures may be homogenius or hetrogenius)

Question 4

what is a hetrogenius matter

Answer 4

a hetrogenius matter is a substance consisting of2 or more visible parts that differ in properties (mixtures may be homogenius or hetrogenius)

Question 5

give 10 examples of charictoristics or thing to indentify a substance with

Answer 5

State solide liquid gas

Colour

Texture

Lustre if it is a solid shiny or dull

\crystal structure if solid is it a crystal

Taste

Odour smell

Solubility dise it dosulve in water

Freezing / melting point when it freezes or metls

Boiling point when it boiles

Desity

Question 6

give 3 examples of behaviors that a thing can have

Answer 6

dose it burn rot EXPLODE!!!!! Change

Question 7

can properties be good and bad give a example

Answer 7

Corine gas was in ww2

Large amount will kill u

can be used to clen / pruifie water

asbestos fire risitent but causes cancer

Question 8

what is mass

Answer 8

mass is a conserved quantity

Question 9

what states can be poured

Answer 9

gas and liquids can be poured

Question 10

if solids cant pour then why can you pour sand

Answer 10

you can pour sand because it is a lot of smaller solids

Question 11

fill this chart https://gyazo.com/2a7749b792f3be36c7ec803cd4687dff

Answer 11

https://gyazo.com/480dc36ca61e9409ef8e6ce07f038c55

Question 12

atoms and molocules are _________ of mater

Answer 12

particals

Question 13

the first S of siasm is

Answer 13

all mater is made of small particals

Question 14

I of siasm is

Answer 14

alll particals of a same substance are identical

Question 15

A of siasm is

Answer 15

all particals of matter atract to one and other (these attractive forces get stronger as the particals go closer together. Solids have stronger attractiveness then liquid or gases )

Question 16

the second S of siasm is

Answer 16

the spaces between the particals are large compared to the sizes of particals themself

Question 17

M of siasm is

Answer 17

the particals of matter are always in motion (speed depends of temperature)

Question 18

what is matter

Answer 18

matter is anything that takes has ams and takes up space

Question 19

what is the effect of presure on gas

Answer 19

particals are moving faster hitting wals harder and being more caotic.

Question 20

what happens when you add heat to something

Answer 20

it makes the particels move faster and the object expands in volume (gets bigger)

Question 21

what happens when you cool somethign down

Answer 21

it slows down the particels and the object decreses in volumes (Is smaller)

Question 22

what dose gas have to do to evaporate

Answer 22

it needs to push on out and eventuly evaporates

Question 23

what is defusion

Answer 23

defusion is the proses witch a substance spreads spontaniously in all derections from a region of high concentration to a region of lower concentration (some times none)

Question 24

what is the differance between a gas and a vapour

Answer 24

a gas is something that is a gas at room temporture and a vapor is something that is a gas at higher tempertures example: water is a liquid then when it is heated it turns in to a gas