

Understanding Pure Substances and Mixtures
Interactive Video
•
Chemistry
•
6th - 8th Grade
•
Hard
Evelyn Hayes
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the primary difference between elements and compounds?
Elements are always metals, while compounds are always non-metals.
Elements can be separated by physical means, while compounds cannot.
Elements are always solid, while compounds are always liquid.
Elements are made of one type of atom, while compounds are made of two or more types of atoms.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a colloid?
Saltwater
Paint
Pure sodium
Oil and water
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do the particles in pure substances compare to those in mixtures?
Pure substances have the same size particles as mixtures.
Pure substances have no particles.
Pure substances have larger particles than mixtures.
Pure substances have smaller particles than mixtures.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the appearance of colloids compared to solutions?
Colloids are homogeneous, while solutions are heterogeneous.
Both colloids and solutions are homogeneous.
Both colloids and solutions are heterogeneous.
Colloids are heterogeneous, while solutions are homogeneous.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which separation technique is used for solutions like seawater?
Distillation
Filtration
Decantation
Centrifugation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the process of separating hydrogen and oxygen in water called?
Decantation
Centrifugation
Distillation
Electrolysis
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method is used to separate colloids?
Filtration
Decantation
Centrifugation
Distillation
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