Types of Elements, Compounds, and Mixtures

Matter is anything that has mass and occupies space. There are 3 phases. In your own words, explain the 3 phases (solid, liquid and gas)

A substance changing from one phase to another is a ____________ change.

• physical

• chemical

When an entirely new substance is formed; a _________ change has happened.

• physical

• chemical

Why is water considered a compound?

• Water is a compound because it can't be broken down any further.

• Water is a compound because it is made of two or more elements that are chemically combined.

• Water is a compound because it is made of two or more elements that are chemically combined.

What are the two (2) types of mixtures?

• heterogeneous

• compounds

• elements

• homogenous

• heterozygotes

What are the two (2) types of pure substances?

• heterogeneous mixtures

• elements

• homogeneous mixtures

• compounds

Organize these options into the right categories

Groups:

(a) Physical Change

,

(b) Chemical Change

• burning wood

• a metal pipe rusts

• dew condensing on a lead

• cooking an egg

• mixing vinegar and baking soda

• digesting food

• alcohol ferments

• chopping firewood

• boiling water

• shredding paper

• fermenting grapes into wine

• mixing sand and salt

• breaking glass

• freezing juice

• decomposing organic matter

• melting ice

Organize these options into the right categories

Groups:

(a) Element

,

(b) Compound

,

(c) Heterogenous Mixture

,

(d) Homogenous Mixture

• 
• 
• 
• 

Answer explanation

The first (1st) picture is an example of a heterogenous mixture because you have the dark blue atoms at the bottom and the red and light blue molecules up top, meaning it will not look the same throughout making it a heterogenous mixture.

The second (2nd) picture is an example of a homogenous mixture because you have the dark blue atoms mixed in with the the red and light blue molecules up top, meaning it will look the same throughout making it a homogenous mixture.

The third (3rd) picture is an example of an element because you only have one type of atom meaning it is an element.

The fourth (4th) picture is and example of a compound because you only have one type of molecule that has formed a chemical bond meaning it is a compound.

Rate your understanding of elements, compounds and mixtures. Do you feel confident, still need more practice, or are you totally lost?