Topic 3 States of matter, separating and purifying

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Total cards: 24•Content version: v3•Public deck•Updated: 8/1/2026

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Front (Question)

1 What are the three states of matter?

Back (Answer)

solid, liquid, gas

Front (Question)

2 In which state are the particles arranged regularly?

Back (Answer)

solid

Front (Question)

3 In which state do particles move quickly in all directions?

Back (Answer)

gas

Front (Question)

4 What state change happens when a substance melts?

Back (Answer)

solid to liquid

Front (Question)

5 What state change happens when a substance condenses?

Back (Answer)

gas to liquid

Front (Question)

6 In general, which state of matter has particles with the highest energy?

Back (Answer)

gas

Front (Question)

7 What is the melting point of water in °C?

Back (Answer)

Front (Question)

8 What is the boiling point of water in °C?

Back (Answer)

100

Front (Question)

10 The melting point of sodium is 97.7 °C. What is the state of sodium at 25.0 °C?

Back (Answer)

solid

#10

Front (Question)

21 What is a mixture?

Back (Answer)

different elements and/or compounds that are not chemically joined together

#11

Front (Question)

22 Which is a mixture, air or water or both?

Back (Answer)

air

#12

Front (Question)

23 Which of a mixture or a pure substance has a fixed composition?

Back (Answer)

pure substance

#13

Front (Question)

27 Is a material that melts over a range of temperatures likely to be a mixture or a pure substance?

Back (Answer)

mixture

#14

Front (Question)

28 Give one safety precaution to take when heating substances.

Back (Answer)

any suitable, tie hair back, tuck tie in, wear safety goggles

#15

Front (Question)

29 What do we call the change of state from a liquid to a gas?

Back (Answer)

evaporation

#16

Front (Question)

30 Name a mixture that could be separated by filtration?

Back (Answer)

any suitable e.g. sand and water

#17

Front (Question)

36 How can you get salt from salty water?

Back (Answer)

evaporate the water; crystallisation

#18

Front (Question)

37 What is the scientific name for a mixture like salty water?

Back (Answer)

solution

#19

Front (Question)

38 What is the term used for the liquid in a solution?

Back (Answer)

solvent

#20

Front (Question)

39 What is the term for the substance that has dissolved in the solution?

Back (Answer)

solute

#21

Front (Question)

40 How can you identify a pure substance on a chromatogram?

Back (Answer)

only one spot/colour

#22

Front (Question)

45 How can we separate an insoluble solid from a liquid?

Back (Answer)

filtration

#23

Front (Question)

46 What word describes the clear liquid that comes through the filter paper?

Back (Answer)

filtrate

#24

Front (Question)

48 What process takes place when a liquid turns into a gas?

Back (Answer)

evaporation