An object/material which you can see through it is...

An object/material which you can't see through it is...

When an object it is easy to break, it is...

How many forms does matter have?

What matters if you heat ice?

What matter if you put a liquid into the freezer?

How is a physical change?

Can you explain an irreversible physical change?

What does it happen if there is a chemical change?

How are chemical changes?

In which chemical change ash and smoke are produced?

In which chemical change metals react with oxygen and water?

Which substance is produced in oxidation?

When organic material decomposes, which chemical change occurs?

What is a mixture?

Can you name examples of mixtures?

Can you see the different substances in homogeneous mixtures?

Can you see the different substances in heterogeneous mixtures?

Which methods are used to separate mixtures?

Which method can be used to separate solids of different sizes?

Which method can be used to separate solids from liquids?

Which method can be used to separate a solid that is dissolved in water?

What is mass?

How can we measure mass?

What is volume?

How can we measure volume?

What do you use to measure mass?

What do you use to measure volume?

Gases do not have definite size or.....

Liquids do not have a definite shape but,

Solids have....

How can we calculate density?

What does density explain?

What is a force?

What kind of forces act from a distance and do not make direct contact with the object?

What kind of forces act through physical contact?

What is gravity?

What is magnetism?

How does friction act?

How does buoyancy act?