Science review

Question 1

What is a tripod stand?

Answer 1

A stand to position things over a Bunsen burner flame while being heated up

Question 2

What does a test tube rack do?

Answer 2

Hold test tubes

Question 3

What is the purpose of a watch glass?

Answer 3

To hold small amounts of substances

Question 4

What is a watch glass?

Answer 4

A tool that holds small amounts of substances

Question 5

Does a conical flask have a lip?

Answer 5

Yes

Question 6

What is the purpose of a conical flask?

Answer 6

To swirl liquids and prevent them from boiling over

Question 7

Which has a larger/more noticeable curve a watch glass or evaporating dish?

Answer 7

Evaporating dish

Question 8

Which is the safety flame in a Bunsen burner?

Answer 8

The yellow flame

Question 9

What is a gauze mat?

Answer 9

A tool to evenly disperse heat from a Bunsen burner flame

Question 10

What is the purpose of a stirring rod?

Answer 10

To stir substances

Question 11

What is a measuring cylindar?

Answer 11

A tool to accurately measure the volume of a liquid

Question 12

Do you ever use a beaker to accurately measure substances?

Answer 12

No

Question 13

Don you ever leave an open falme unnattended?

Answer 13

No

Question 14

How often must you wear safety glasses when heating or mixing substances?

Answer 14

All the time

Question 15

What should you do if you spill any chemicals, break any glassware, burn or cut yourself?

Answer 15

Tell the teacher immedietly

Question 16

Do you mix unknown chemicals at random? Why or Why not?

Answer 16

No because it can cause an unknown or dangerous reaction

Question 17

When do you follow teacher instructions?

Answer 17

Always

Question 18

What does it mean if something is corrosive?

Answer 18

It can cause skin/eyes to burn or can damage metals

Question 19

What are the harms of chemicals that oxidise?

Answer 19

These chemical produce oxygen which causes other substances to burn

Question 20

What is the purpose of a beaker?

Answer 20

To hold, mix and heat substances

Question 21

What is the purpose of a filter funnel?

Answer 21

To help pour solutions into smaller containers or to separate mixtures

Question 22

What is the purpose of a test tube?

Answer 22

To hold small amounts of liquid

Question 23

What is the purpose of a gauze mat?

Answer 23

To evenly disperse heat from a bunsen burner while heating

Question 24

What is the purpose of a bunsen burner?

Answer 24

to heat up chemicals with a controlled amount of heat

Question 25

What is the name of the equipment that holds up equipment in place?

Answer 25

Retort stand, boss head and clamp

Question 26

What is the name of the equipment that holds small amount of substances?

Answer 26

Watch glass

Question 27

What is the key to scientific investigation?

Answer 27

Curiosity

Question 28

What do questions help do?

Answer 28

Identify what we do and do not know

Question 29

What are the two main types of questions?

Answer 29

Closed questions - answered with a fact Open questions - need deeper thinking

Question 30

What do good scientific questions include?

Answer 30

- clear and focused - can be investigated or tested - often begin with how, why, what

Question 31

Name some safety rules that must be followed at all times in the lab

Answer 31

- wear safety glasses - tie back long hair - don't eat or drink in the lab - follow instructions carefully - no running in the lab - alway swear enclosed, leather footwear - do not enter a lab without the teacher's permission - do not smell gasses or mixtures of chemical directly, they should only be wafted near your nose if instructed by the teacher - do not mix unknown chemical at random - tell a teacher immediately if you break glassware

Question 32

Name some safety symbols

Answer 32

Corrosive, flammable, explosive, oxidising, toxic

Question 33

What is an observation?

Answer 33

Recording of facts and senses - hearing and sight

Question 34

What is an inference?

Answer 34

A conclusion drawn from evidence

Question 35

What is a prediction?

Answer 35

A statement on what you think will happen next

Question 36

What is an independent variable?

Answer 36

The one thing you change in an experiment. Limit to one every experiment. For example gender identity, ethnicity, income and race.

Question 37

How many independent variables are in an experiment?

Answer 37

One

Question 38

What is a dependant variable?

Answer 38

The change that happens because of the independent variable. For example a test score.

Question 39

What is a controlled variable?

Answer 39

Everything that reamins constant and unchanging. For example the test paper or test conditions.

Question 40

How can we guarantee a fair or mostly fair test?

Answer 40

Control as many variables as possible and use close measurements to the true result.

Question 41

What are the two types of data?

Answer 41

Quantitive data Qualitative data

Question 42

What is Quantitive data?

Answer 42

Date that concerns quantities (numerical)

Question 43

What is Qualitative data?

Answer 43

Data that only concerns qualities with no numerical data. For example red, blue, soft, rough

Question 44

What are the four states of matter?

Answer 44

solid, liquid, gas, plasma