1LEVEL
What are the three states of matter?
Liquid, solid and gas.
Is oil soluble in water?,yes or no.
No.
Which unit do we use to measure mass?
Grams (g) and/or kilograms (kg).
What is matter? Give me examples.
Matter is all around us. It is things we can see, things we cannot see and things we can taste. For example: a table, oxygen and an orange juice.
what is the melting point for ice?
The melting point for ice is 0ºC
What is the boling point for water?
The boiling point for Whater is 100ºC
Tell me five materials that are good heat insulators.
Wood, paper, plastic, glass and wool.
What are the two opposite forces of flotation?
Gravity and buoyancy.
True or false: cork, that have a lawer thensity than water dsen’t float.
False because, the Cork float.
Tell me an example of a pure substance and of a mixture.
Silver, sand…
What is the difference between mass and volume?
Mass is the amount of matter in an object and volume is the amount of space an object occupies.
Why do some objets float an others sink?
Because is the objet is denser than the liquid is in, it will sink and is the objet is less dense than the liquid, it will flote.
What are the ten properties which help us identify the type of matter?
Colour hardness, magnetic properties, density, solubility, melting point, boiling point, thermal conductivity and elasticity.
Explain the difference between gravity and buoyancy.
Gravity is a downward force which pushes down on the object and buoyancy is an upward force which pushes the object towards the surface of the liquid.
What is the name of the softest mineral?
Her name is Talc.