Matter Basics
What is matter?
Anything that has mass and takes up space (volume).
What is it called when ice turns into water?
Melting.
Is cutting paper a physical or chemical change?
Physical change.
What is manufacturing?
The process of making products from raw materials.
What does “reduce” mean in the 3Rs?
Use less.
Name the three states of matter.
Solid, liquid, gas.
What is condensation?
When a gas turns into a liquid.
What is one sign of a chemical change?
Colour change, gas produced, heat/light released, new substance formed.
How can factories negatively impact the environment?
Air pollution, water pollution, waste production.
How does buying local products help the environment?
Reduces transportation pollution.
What is one property of a solid?
Has a definite shape and definite volume.
What happens to particles when matter is heated?
They move faster and spread farther apart.
Why is melting chocolate a physical change?
It changes state but remains the same substance.
Why is plastic harmful to the environment?
It does not break down easily and pollutes land and water.
What is a renewable resource?
A resource that can be replaced naturally in a short time.
How is a liquid different from a solid?
A liquid has a definite volume but no definite shape.
Why does water evaporate faster on a hot day?
Because it absorbs thermal energy. (Heat)
Why is rusting a chemical change?
A new substance (rust) is formed.
What is one way companies can reduce environmental impact?
Recycling materials, using renewable energy, reducing waste.
Give one example of how individuals can reduce waste.
Use reusable containers, recycle, compost.
Why is air considered matter?
It has mass and takes up space even though we cannot see it.
What must happen for a gas to turn into a solid?
It must release thermal energy. (Heat)
Give two signs that baking a cake is a chemical change.
Gas bubbles form, heat is released, colour changes, new substance forms.
Why might aluminum be a better material choice than plastic in some products?
It can be recycled many times and reduces waste
Why should companies think about the life cycle of a product?
To understand its impact from creation to disposal.