Yr 8 Chemistry

what is an atom

• smallest part of the universe

• smallest part of a substance

• smallest part of anything

• smallest part of water

The inner energy level can only hold ______ electrons.

• 1
• 0
• 2
• 18

What is a pure substance that cannot be broken down into any other substance by physical or chemical means. Ex: Gold, Silver, Oxygen, & Nitrogen

• element
• compound
• mixture
• salad

What is an atom which has gained or last electrons called?

• isotope
• atom
• ion
• balanced

What type of property can only be observed by changing the substance into a new substance. Ex: Flammability, oxidation

• chemical
• physical

What is matter

• Anything which is solid
• Anything that takes up space and has mass
• when something is wrong

Gold is an example of a(n) 

• pure element
• pure compound
• pure mixture

Air is an example of a(n)

• element
• compound
• heterogenous mixture
• homogenous mixture

Phase changes (going from a solid to a liquid to a gas) are what types of changes?

• chemical
• physical

Elements in a compound can be separated __________

• physically
• chemically