SCIENCE REVISION 3

MATERIALS AND THEIR PROPERTIES​

By Siabei

• PROPERTIES OF MATERIALS

• CHANGING MATERIALS

• SEPARATING MATERIALS

​NATURAL - - Oil, Rock, Metals and clay/wool, cotton, leather, rubber

​

​

MAN MADE-- plastic, nylon, polyester

1. ​ Strong (sturdy).. steel bridge

2. Hard (difficult to scratch)​...hammer head, diamond cutter

3. Flexible (bendy)leather

4. Rigid (stiff)​ladder,

5. Absorbent (soaks up liquids) towel

6. water​proof (repels water) umbrella, tent

7. Transparent (see through) glass

8. opaque () fabric

9. float

10. sink metal anchor

11. stretch elastic

12. compressed spring​

​Properties

conductors (heat, electricity) - metals

Insulators (heat, electricity) - ​

​

magnetic- metals

poles

Iron and steel

Aluminium, brass and copper Non magnetic​

Multiple Choice

¿What is this material made of?

• Steel

• Wool

• Wood

• Slick

Multiple Choice

¿What is this material made of ?

• Steel

• Gold

• Wood

• Straw

Multiple Choice

¿What is this material made of?

• Wood

• Silk

• Súper man

• Silver

Multiple Choice

¿What is this material made of?

• Wool

• Wood

• Silk

• Leather

Multiple Choice

¿What is this material made of ?

• Wool

• Silk

• Glass

• Wood

Multiple Choice

¿What is this material made of?

• Wood

• Wool

Multiple Choice

¿What is this material made of?

• Rubber

• Wood

• Silk

• wool

Multiple Choice

¿What is this material made of?

• Concrete

• Bricks

• Copper

• Bronze

Multiple Choice

Transparent and brittle

• Metal

• Sponge

• Glass

• Plastic

Multiple Choice

Shiny and conducts electricity

• Meetal

• Polythene

• Rubber

• Metal

Multiple Choice

Flexible and elastic and a opaque

• Fabric

• Tissue paper

• Rubber

• Wood

Multiple Choice

Dull and an electrical insulator

• Iron

• Glass

• Wood

• Paper

Multiple Choice

Hard and attracted to a magnet

• Wool

• Wood

• Metal

• Cotton

Multiple Choice

An electrical and thermal insulator

• Wood/glass/plastic

• Fabric /tissue/silk

• Metal/polythene/cotton

• None of them

Multiple Choice

Magnets not only pull things, but they can also push things away.

• True

• False

Multiple Choice

The Earth is one big giant magnet.

• True

• False

Multiple Choice

Two magnets with like poles will _________ each other.

• attract (pull together)

• repel (push apart)

Multiple Choice

Magnets will only be attracted to objects that have this in them.

• silver

• copper

• gold

• iron

Multiple Choice

The handle of a frying pan is often coated in rubber because rubber provides...

• Heat insulation
• Heat conduction
• A low melting point
• A nonstick surface

Multiple Choice

Is iron a conductor or insulator?

• Conductor
• Insulator

Multiple Choice

What is NOT an example of an insulator in the kitchen?

• An oven mitt
• Pots and pans
• A wooden spoon
• A plastic measuring cup

Multiple Choice

Conductors are materials that...

• Allow heat to pass through
• Stop heat from passing through
• Allow cold to pass through
• Stop cold from passing through

Multiple Choice

__________________ happens when particles of a solid speed up and become able to move past one another.

• freezing

• melting

• condensation

• boiling

Multiple Choice

Particles in a ________ move as fast and as far away from each other as they can. They will continue to spread out until something stops them.

• liquids

• solids

• gas

Multiple Choice

As liquid water heats up, particles escape from the surface, this is called ______________.

• boiling

• evaporation

• melting

• freezing

Multiple Choice

When liquid water evaporates, it turns into ______________.

• snow

• solid

• Ice

• Water Vapor

Multiple Choice

Particles in a _____________ vibrate in place, but cannot move past each other.

• gas

• solid

• liquid

Multiple Choice

If enough heat is removed from a gas, it will change into a ___________.

• liquid

• solid

• gas

Multiple Choice

If enough heat is removed from a liquid, it will become a ____________.

• solid

• gas

• tree

• cloud

Multiple Choice

The process of a liquid turning into a solid is called ________.

• boiling

• condensation

• melting

• freezing

Multiple Choice

_____________ is when a gas turns into a liquid.

• freezing

• condensation

• melting

• evaporation

Multiple Choice

________ is rapid evaporation that takes place throughout a liquid.

• evaporation

• freezing

• boiling

• condensation

​IRREVERSIBLE CHANGES

​REVERSIBLE CHANGES

Multiple Select

Chemical changes...

• Always form a new substance.

• May change shape or size.

• May absorb or release heat.

• May change colour, produce odor, create sound, release gas or produce light.

• Can often be undone.

Multiple Select

Physical Changes...

• Do not form a new substance.

• May change shape or size.

• May absorb or release heat.

• May change state of matter.

• Can often be undone.

Multiple Choice

Rusting is an irreversible change.

• TRUE

• FALSE

Multiple Select

Which of these are irreversible changes?

• Salt dissolved in water.

• Plaster of Paris dissolved in water.

• Wood that has been burnt.

• An egg that has been boiled.

Multiple Select

Which of these changes are reversible?

• Sand mixed in water.

• Rice mixed in sand.

• potato that has been baked.

• An effervescent tablet (e.g. Alka-Seltzer®) dissolved in water.

Multiple Choice

Which of these is NOT a reversible change?

• Water to Ice
• Juice to Popsicle
• Cookie Dough to Cookie
• Melting Chocolate

Multiple Choice

Which is not a property of matter?

• solid
• liquid
• gas
• ice

Multiple Select

The burning of fuel in a truck is irreversible.

• true

• false

Multiple Select

Condensation of steam is a reversible change.

• true

• false

Multiple Select

Sugar dissolves in water to form a solution.

• true

• false

Multiple Select

The rusting of iron in moist air is a reversible change.

• true

• false

Multiple Choice

Trick Question

If you mixed water with an air is it reversible

After the quiz it must be discussed

• In a way yes

• Obviously not

• I don't care

• No answer