Chemistry: Properties of Matter

Question 1

physical properties of change

Answer 1

change in state
change is reversable
substances keep individual properties

Question 2

chemical properties of change

Answer 2

new color (no shade or tints)
new smell
heat produced/absorbed
sound
substances being used up
new substances being formed

Question 3

qualitive vs quantative

Answer 3

qualative - physical observations
quantative - observations including numbers

Question 4

homogenous vs heterogenous

Answer 4

homogenous - appears to have 1 type of particle
heterogenous - clealry has mroe than 2 diff particles

Question 5

solid -> gas

Answer 5

sublimation

Question 6

gas -> solid

Answer 6

deposition

Question 7

liquid -> solid

Answer 7

freeze

Question 8

solid - liquid

Answer 8

melt

Question 9

liquid -> gas

Answer 9

evaporation

Question 10

gas -> liquid

Answer 10

condensation

Question 11

hydrogen gas

Answer 11

when a flaming lint is placed into a hydrogen gas, a ‘pop’ sound will be heard

Question 12

oxygen gas

Answer 12

a glowing lint is placed into oxygen gas, the slint will relight into a flaming splint

Question 13

carbon dioxide gas

Answer 13

whne co2 is bubbled through limewater, the limewater changes into a white solution

Question 14

mixtures

Answer 14

mre than 1 type of particle

Question 15

mechanical mixture

Answer 15

2+ diff types of particles are visible

Question 16

solution

Answer 16

particles r too small to see + wont be effected by gravity

Question 17

pure substances

Answer 17

only made up of 1 type of aprticle

Question 18

compound (pure substance)

Answer 18

2 or more diff atoms are bonded together

Question 19

element (pure substances)

Answer 19

the periodic table

Question 20

density formula

Answer 20

d - m/v