Chemistry Part 1 MATTER

Question 1

What is Matter

Answer 1

anything that has mass and takes up space

Question 2

Basic properties of matter

Answer 2

Volume - the amount of space that matter takes up
Mass - the amount of matter an object has
Shape: the state of matter (liquid, gas, solid)

Question 3

States of Matter

Answer 3

Solid - have a fixed shape and volume
Liquids - have a fixed volume and takes the shape of the container
Gases - has no fixed volume always takes shape of the container

Question 4

Physical Property

Answer 4

A property/characteristic of matter that is observed with our 5 senses

Question 5

Quantitative vs Qualitative properties

Answer 5

both physical properties
quantitative: a numerical observation
qualitative: an observation made with our 5 senses

Question 6

Chemical property

Answer 6

the behaviour of a substance as it becomes a new substance

• reactivity w/ acid
• reactivity w/ oxygen (combustibility and flammable)
• reactivity w/ water
• reactivity to the exposure to oxygen in water/air, rust

Question 7

Physical change

Answer 7

• substance still exists only has changed form (evaporation or the way it looks, dissolving)
• reversible
• a solution is a physical change

Question 8

Chemical change

Answer 8

• a new substance produced
• irreversible
• precipitate form, bubbles or gas produced, change in color, change in odor, change in energy, heat or light production

Question 9

Particle theory

Answer 9

1. All matter is made up of tiny particles called atoms
2. All particles of one substance are the same vice versa
3. There are spaces between the particles
4. The particles are always moving, more energy = faster
5. There are attractive forces among paricles

Question 10

Scientific Method

Answer 10

1. Question/problem
2. Research
3. Hypothesis
4. Experimental Design
5. Observations
6. Analyze
7. Conclusion

Question 11

hints that a chemical reactions has occured

Answer 11

light produced
heat produced
odour change
colour change
gas bubbles produced
precipitate formed?

Question 12

Density

Answer 12

• a physical property
• mass per unit of volume
• steeper slope = higher density

Question 13

Pure substance

Answer 13

• only 1 type of particle
• all pure substance have the same properties
• components cannot be separated by physical means

Question 14

element

Answer 14

• one type of atom that cannot be broken down into simpler substances
• in an element the molecules are made of the same atoms

Question 15

Compound

Answer 15

• Two or more diff elements
• can be broken down into simpler substances

Question 16

Mixture

Answer 16

• can be separated by physical means
• 2 or more different pure substances

Question 17

homogenous

Answer 17

• mix so well you can only see one phase
• aka a solution

Question 18

heterogenous

Answer 18

• you can see the diff parts