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Unit 6 Lesson 4 Pure Substances And Mixtures - PART 2
Test Description: Distinguishing between pure substances (elements and compounds) and mixtures.
Instructions: Answer all questions to get your test result.
1) a mixture that does not have a uniform composition; substances are not evenly spread throughout
A
homogeneous
B
biochemical
C
matter
D
heterogenous
2) a mixture that has a uniform composition; substances are evenly spread throughout
A
heterogeneous
B
matter
C
biochemical
D
homogenous
3) a mixture in which the particle of a material are spread throughout a liquid or gas but are too large to stay mixed without being stirred or shaken
A
biochemical
B
colloid
C
solution
D
suspension
4) one substance dissolved in another substance
A
suspension
B
biochemical
C
solution
D
colloid
5) a mixture in which the particles of a material are spread throughout a liquid or gas but are small and do not settle out quickly
A
suspension
B
biochemical
C
colloid
D
solution
6) Sucrose is another name for table sugar. Sucrose is a compound made from the elements carbon, hydrogen, and oxygen. Which statement best describes the properties of sucrose?
A
They are exactly like the properties of hydrogen.
B
They are different from the properties of the elements in sucrose.
C
They are exactly like the properties of oxygen.
D
They are exactly like the properties of carbon.
7) David found that water can be created in a lab by burning hydrogen gas in the air. He concluded that water is not a compound because only hydrogen was used to form the water. What is wrong with David's conclusion?
A
Water was not the product formed when he burned hydrogen.
B
A compound only contains one type of element.
C
Hydrogen is made up of two different types of atoms.
D
The hydrogen combined with oxygen from the air to form water.
8) Each element is a pure substance that cannot be broken down into simpler materials by ordinary means is is represented by a unique chemical symbol.
A
TRUE
B
FALSE
9) Atoms combine in different ways to make up all of the substance you encounter every day.
A
TRUE
B
FALSE
10) Saltwater can be separated into salt and water. Therefore, it is a mixture.
A
FALSE
B
TRUE
*select an answer for all questions
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