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- 1. Fill in the Blank
William finds a piece of pure iron in his garden. After a few days, the iron begins to rust. What are the two types of substances involved in the rusting process of iron?
Iron is a ________ (compound, an element, a mixture)
with one kind of atom that combines with oxygen from the air to form rust (iron oxide).
- 2. Fill in the Blank
Rust contains two types of atoms, which means it is a/an_____________. (compound, element, mixture)
- 3. Fill in the Blank
Type the correct answer in the box. Use numerals instead of words.
Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 g/cm3, what is the sample’s volume?
The sample’s volume is ____cm3.
- 4. Multiple Choice
Mathew has a filtration kit, which consists of a funnel, a flask, and filter papers. Which of these mixtures can he separate using filtration?
- 5. Multiple Choice
Check all the sentences based on whether they describe the properties of a heterogeneous mixture.(check all that apply)
Its components are visible.
It may be mistaken for a pure substance.
It can be separated using distillation.
Concrete is an example of this kind of mixture.
- 6. Multiple Choice
Which unit is commonly used to measure density?
A. gcm3
B. g/cm3
C. cm3/g
D. g/cm
- 7. Multiple Choice
An alloy is made up of two kinds of metals. This alloy is uniform in appearance. How would this material be classified?
A. substance
B. homogeneous mixture
C. heterogeneous mixture
D. compound
- 8. Multiple Choice
An electric iron is used to remove wrinkles from clothing. The electric iron is made of metal. Which property of this substance is most useful for this application?
A. boiling point
B. density
C. electrical conductivity
D. thermal conductivity
- 9. Multiple Choice
What is a substance?
A. a uniform mixture that can’t be separated
B. a mixture that can be separated
C. a single component that can’t be separated
D. a single component that can be separated
- 10. Multiple Choice
Daniel has a sample of pure copper. Its mass is 89.6 grams (g), and its volume is 10 cubic centimeters (cm3). What’s the density of the sample?
A. 0.11 g/cm3
B. 8.96 g/cm3
C. 11.1 g/cm3
D. 896 g/cm3
- 11. Multiple Choice
Erica is working in the lab. She wants to remove the fine dust particles suspended in a sample of oil. Which method is she most likely to use?
A. reverse osmosis
B. osmosis
C. filtration
D. dilution
- 12. Multiple Choice
Which of the following property does not describe a compound:
it is composed of two or more elements
it is a pure substance
constituents cannot be separated by physical means
mixed in any proportion by mass
- 13. Multiple Choice
Suspension can be separated by filtration.
TRUE
FALSE
- 14. Fill in the Blank
Solution is a __________ mixture. (homogeneous, hetrogeneous)
- 15. Multiple Choice
Which of the following is a heterogeneous mixture?
brass
sand
Kool-aid
vanilla yogurt
- 16. Multiple Choice
Which of the following is a homogeneous mixture?
jello
granite
dirt
salsa
- 17. Multiple Choice
What type of mixture would coffee be?
homogeneous
heterogeneous
- 18. Multiple Choice
What type of mixture would fruit salad be?
homogeneous
heterogeneous
- 19. Multiple Choice
What type of mixture would a nail be?
homogeneous
heterogeneous
- 20. Multiple Choice
What type of mixture would a bottle of shampoo be?
homogeneous
heterogeneous
- 21. Multiple Choice
What type of mixture would milk chocolate be?
heterogeneous
homogeneous
- 22. Multiple Choice
What type of mixture is a peanut M&M?
heterogeneous
homogeneous
- 23. Multiple Choice
What type of mixture is honey?
heterogeneous
homogeneous
- 24. Multiple Choice
What type of mixture is chicken noodle soup?
heterogeneous
homogeneous
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