Worksheets6. Pure vs. mixtures. Homogeneous vs. heterogeneous
Total questions: 10
Worksheet time: 23mins
1-4.
Answer the questions below after watching the video
What is a pure substance?
A mixture of two elements
A single element or a compound
A combination of gases
Any liquid or solid
Which process is required to separate compounds?
Physical process
Chemical process
Both physical and chemical processes
No separation is possible
What type of mixture is air?
Homogeneous
Heterogeneous
Compound
Pure substance
Which is an example of a heterogeneous mixture?
Distilled water
Vinegar
Fruit salad
Gatorade
What is a pure substance containing 2 or more different atoms?
electron
element
compound
proton
Table Salt (NaCl)
Heterogeneous
Homogeneous
Compound
Element
Sugar ( C12 H22 O11 ) + Water ( H2 O )
Homogeneous
Element
Compound
Heterogeneous
Why is water a pure substance?
It can be broken down physically
It's a mixture, not a pure substance
Every water molecule is identical
Water molecules are made of many types of atoms
which is the best example of pure substance?
pizza
saltwater
air
gold
What is the best classification of this substance?
An element
A compound
A mixture of 2 elements
A mixture of 2 compounds
Coffee
Homogeneous
Heterogeneous
Compound
Pure Substance
