Unit 2: Physical Properties

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

What is density?

Back (Answer)

The density of a substance is defined as its mass per unit volume. Symbol: ρ

Front (Question)

What is the formula for density?

Back (Answer)

Density = Mass / Volume

Front (Question)

What is the SI Unit for Density?

Back (Answer)

kg/m³ or kg m^-3 but normally its g/cm³ or g cm^-3 (not si unit tho) 1000 kg/m³ = 1 g/cm³

Front (Question)

What happens when an object is placed in a liquid of lower density than itself?

Back (Answer)

the object sinks because the object’s density is higher than the liquid

Front (Question)

What happens when an object is placed in a liquid of a greater density than itself?

Back (Answer)

the object floats because the object’s density is lower than the liquid

Front (Question)

What are the 3 materials that always float in water no matter what size or shape they are?

Back (Answer)

Wood, Cork and Ice

Front (Question)

What materials may float or sink depending on their shape?

Back (Answer)

Modelling Clay and Steel

Front (Question)

Can density help to identify a substance?

Back (Answer)

Yes All substances have a unique density

Front (Question)

Is Density a physical property?

Back (Answer)

Yes

#10

Front (Question)

Is Density constant at a given temperature?

Back (Answer)

Yes

#11

Front (Question)

Do all pieces of the same substance have the same density regardless of their volume or mass?

Back (Answer)

Yes

#12

Front (Question)

What happens when an object has the same density as the liquid it is in?

Back (Answer)

When an object has the same density as a liquid, it will suspend (remain in the middle of the liquid; neither float nor sink)

#13

Front (Question)

What is the formula for mass?

Back (Answer)

mass = density x volume

#14

Front (Question)

What is the formula for volume?

Back (Answer)

volume = mass / density

#15

Front (Question)

Ceramic

Back (Answer)

• Made from clay • Poor conductor of electricity • Hard • Can be moulded into shapes • Does not corrode • Has a high melting point • Fragile

#16

Front (Question)

Metal

Back (Answer)

• Shiny • Good conductor of electricity • Good conductor of heat • Can be moulded into shapes • Can be bent without breaking

#17

Front (Question)

Glass

Back (Answer)

• Transparent • Poor conductor of electricity • Poor conductor of heat • Can be moulded into shapes • Has a high melting point • Fragile

#18

Front (Question)

Fibres

Back (Answer)

• Can be spun into threads and woven into fabrics • Able to absorb dyes • Poor conductors of electricity • Poor conductors of heat

#19

Front (Question)

Plastic

Back (Answer)

• Lightweight • Does not corrode • Can be moulded into shapes • Has a low melting point • Poor conductor of electricity • Poor conductor of heat

#20

Front (Question)

Strength

Back (Answer)

• Ability to support a heavy load without changing its shape permanently

#21

Front (Question)

Hardness

Back (Answer)

• Its resistance to wear and tear, and scratches • Ability to scratch another material • A hard material can scratch another material that is softer than itself

#22

Front (Question)

Flexibility

Back (Answer)

• Ability to bend without breaking and return to its original shape

#23

Front (Question)

Electrical conductivity

Back (Answer)

• Measure of how easily an electric current passes through it

#24

Front (Question)

Thermal conductivity

Back (Answer)

• Measure of how easily heat passes through it