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Chemistry Mini Exam - Mixtures

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Chemistry Mini Exam
Mixtures
1) Which of the following best describes a chemical mixture?
A compound made from different elements
A substance made through chemical bonding
When two substances are combined, but are not chemically bonded
All of the above
None of the Above
2) Which of the following is NOT a property of a mixture?
The components can be easily separated
The original properties of the combined substances are changed
The proportion of the components is variable
Two or more substances are combined
All of the Above
3) Which of the following is an example of a homogeneous mixture?
Salt water
Blood
Metal alloys
Air
All of the Above
4) In what type of mixture are the substances evenly distributed throughout the mixture?
Homogeneous
Heterogeneous
All types of mixtures
No types of mixtures
5) What is the substance that dissolves in a solution called?
Solvent
Alloy
Suspension
Solute
Colloid
6) Salt water is an example of what type of mixture?
Alloy
Suspension
Solution
Colloid
Heterogeneous
7) Which of the following statements is true about mixtures and solutions?
Solutions are heterogeneous mixtures
A solution is a type of mixture
All mixtures are solutions
All of the above
None of the Above
8) Consider two samples of palladium (Pd), an element used in automobile catalytic converters.
Sample A is a cylindrical bar with a mass of 97.36 g. The bar is 10.7 cm high and has a radius of
4.91 mm. Sample B is an irregular solid with a mass of 49.20 g. A graduated cylinder has 10.00 mL
of water. When sample B is added to the graduated cylinder, the volume of the water and the
solid is 14.09 mL.
i)
Calculate the density of each sample.
ii)
According to your result, is density an intensive or extensive property? Why?
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