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C3.1 - States of matter

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Total cards: 12•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (12)

#1
Front (Question)

Limitations to the particle model

Back (Answer)

• doesn’t show ions/molecules/atoms properly • doesn’t include size or shape of them • doesn’t show forces/bonds between them • doesn’t represent the space between the particles accurately

#2
Front (Question)

3 states of matter

Back (Answer)

• solid • liquid • gas

#3
Front (Question)

solid particles

Back (Answer)

• cannot be squashed • packed tightly • in a regular pattern • vibrate around in fixed positions

#4
Front (Question)

Liquid particles

Back (Answer)

• close together • cannot be squashed • can slip/slide over each other • move in a random motion

#5
Front (Question)

Gas particles

Back (Answer)

• can be squashed • lots of space between them • move around randomly

#6
Front (Question)

What is needed for something to change states

Back (Answer)

• energy is needed to break the bonds between the particles - so that they can change state

#7
Front (Question)

The higher the melting/boiling point..

Back (Answer)

the more energy is needed to break those bonds

#8
Front (Question)

Energy in melting or boiling

Back (Answer)

energy is transferred to the substance from the surroundings

#9
Front (Question)

Energy in condensing/freezing

Back (Answer)

energy is transferred from the substance to the surroundings

#10
Front (Question)

what temp does water freeze at?

Back (Answer)

0 degrees celsius

#11
Front (Question)

What temp does water boil at?

Back (Answer)

100 degrees celsius

#12
Front (Question)

As there is a change of state …

Back (Answer)

the temp stays constant (doesn’t increase)