Which one is a chemical change?
stretching a rubber band
drying your hair
oxidation of metal (rust)
folding paper
What's the best way to separate spaghetti and water?
sieving
evaporation
distillation
filtration
What's one way to save energy?
Leave the frige door open.
Walk or ride a bike instead of driving.
T.urn on the light when you leave the room
Put paper, plastic, metal and glass in the rubbish.
What method of separation is this?
sieving
distillation
evaporation
filtration
Which one is a chemical change?
a glass breaking
colouring on paper
burning paper (combustion)
ice melting
What state of matter is sand?
gas
plasma
liquid
solid
Which example IS NOT matter.
a chair
water
a sound (music)
a cloud
Which one is a thermal insulator?
aluminium
gold
plastic
steel
Which one is a reversible physical change?
digesting food
ice melting
baking a cake
burning paper
When you cut paper, what type of change is it?
an irreversible physical change
a reversible physical change
a chemical change
What state of matter is oil?
liquid
solid
gas
Is boba tea a homogeneous mixture, a heterogeneous mixture, or a pure substance?
It's a heterogeneous mixture
It's a homogeneous mixture
It's a pure substance
What state of matter are clouds?
solid
liquid
gas
What state of matter is honey?
plasma
gas
solid
liquid
What's the best way to separate ColaCao and milk?
distillation
evaporation
filtration
sieving
Is coffee a homogeneous mixture, a heterogeneous mixture, or a pure substance?
It's a heterogeneous mixture
It's a homogeneous mixture
It's a pure substance
What does this separate?
a solution to two liquids
a mixture of two solids
a solution of a solid and a liquid
a mixture of a solid and a liquid
We can divide the word heterogeneous into two parts: hetero.geneous. What does HETERO mean?
different
mixture
the same
pure substance
When water boils, what type of change is it?
a chemical change
an irreversible physical change
a reversible physical change
What state of matter is lava?
plasma
gas
liquid
solid
Is lemonade a homogeneous mixture, a heterogeneous mixture, or a pure substance?
It's a homogeneous mixture
It's a pure substance
It's a heterogeneous mixture
What state of matter is flour?
liquid
gas
plasma
solid
When water condenses, what type of change is it?
a chemical change
a reversible physical change
an irreversible physical change
When water freezes, what type of change is it?
an irreversible physical change
a reversible physical change
a chemical change
We can divide the word homogeneous into two parts: homo.geneous. What does HOMO mean?
pure substance
different
mixture
the same
What's the best way to separate sand and small shells
sieving
evaporation
filtration
distillation
Which one is a thermal conductor?
glass
copper
wool
cotton
Is water a homogeneous mixture, a heterogeneous mixture, or a pure substance?
It's a heterogeneous mixture
It's a pure substance
It's a homogeneous mixture