Year 8 Chemistry 1

What is the melting point?

• The temperature that a solid turns to a gas

• The temperature that a solid turns to a liquid

• The temperature that a liquid turns to a solid

• The temperature that a liquid turns to a gas

What is boiling?

• A solid turning to liquid

• liquid turning to solid

• liquid turning to gas

• gas turning to liquid

What is diffusion

• The random movement of particles

• gases turning into liquid

• movement in liquids

• moving from low to high melting point

What is an element

• one type of atom

• more than one type of atom that is chemically bonded together

• more than one type of element not bonded together

• one atom

A Compound is ...

• one type of atom

• more than one type of atom chemically joined together

• more than one type of atom not chemically joined together

• one atom

A molecule is

• made up of two or more atoms that are strongly joined together

• one type of atom

• a group of compounds

• made of two different atoms chemically joined together

The chemicals that we react together in a chemical reaction are called

• the products

• the reactants

• compounds

• substances

What is the scientific name for the substances we produce in a chemical reaction

• reactants

• compounds

• products

• substances

Which one of the following is the name for separation technique in the picture below

• distillation

• filtration

• evaporation

• chromatography

Which separation technique is shown below

• filtration

• crystallization

• sublimation

• evaporation