Year 8 Science (Week 1-3 Review)

When water is placed above a Bunsen burner the particles are heated. During this process of a liquid the particles are;

• Moving slower and lose energy

• Have cold energy applied and particles move closer together.

• Move faster, gain energy and spread apart

• No change to the movement of particles

The periodic table shows;

• mixtures

• elements

• compounds

• molecules

True or False: Elements are made up of one type of atom.

• TRUE

• FALSE

True or False: Compounds are made up of two or more different atoms physically mixed. Not bonded.

• TRUE

• FALSE

True or False: Mixtures are made up of two or more different atoms physically mixed. Not bonded.

• TRUE

• FALSE

Which of the following is not true about the periodic table?

• Elements are arranged in order of increasing atomic number

• Elements in the same groups/families will have similar physical and chemical properties

• Elements on the periodic table are molecules

• The number or protons and electrons are the same in a neutral atom

From the photo which letter/s represent elements

• A,B & C

• A,F & G

• B & H

• F & G

From the photo which letter represents a mixture:

• C

• C & D

• A, B, & H

• C,D & H

Separation techniques like magnetism, filtration and evaporation are used to separate which type of matter?

• element

• mixture

• compound

• pure substance

What are the reversible the phase change between liquids and gases?

• Sublimation and deposition

• Evaporation and condensation

• boiling and freezing

• melting and freezing