Chemistry

Question 1

What is matter

Answer 1

matter is anything that has a mass and takes up space

Question 2

Particle theory

Answer 2

all matter is made up of particles
there are three states of matter - solid, liquid and gas
particles move faster when heated and slower when cooled
particles are in constant motion
particles cannot be destroyed or created

Question 3

Pure substances

Answer 3

a substance made up of only one type of particle

Question 4

mixtures

Answer 4

a substance made up of 2 or more types of particles

Question 5

mechanical mixture

Answer 5

you are able to see the different particles

Question 6

Solution

Answer 6

you are not able to see the different particles

Question 7

Physical property

Answer 7

used to describe a substance (no changes to the particles)

Question 8

Physical change

Answer 8

a change of state or shape (no change to the particles)

Question 9

Qualative

Answer 9

used to describe physical property without using numbers

Question 10

Quantative

Answer 10

used to describe physical property with numbers

Question 11

Qualative descriptions

Answer 11

Luster 
Optical clarity
brittleness
viscosity
hardness 
malleability
duclicity 
Electrical conductivity

Question 12

characteristic physical property

Answer 12

unique to a substance and can be used to identify it

Question 13

chemical property

Answer 13

describes how a substance can change

flammability, explosiveness, reactions

Question 14

chemical change

Answer 14

a change in the substance/material

change of colour, odour, bubbles, shape