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- 1. Multiple Choice
Chemistry is a natural science that deals with the study of:
Living things and their life processes
the physical features of the Earth
the composition, structure, properties, and changes of matter.
the composition, motion, and relative positions of stars and planets.
- 2. Multiple Choice
An example of an element is
salt
mud
water
carbon
- 3. Multiple Choice
An example of a heterogeneous mixture is
sugar
hydrogen
soil
air
- 4. Multiple Choice
Which process is a chemical change?
heating a liquid to boiling
dissolving a powder in water
burning a solid
slicing a solid into two pieces
- 5. Multiple Choice
Water changing states at 100 degrees Celsius is an example of
chemical property
extensive property
physical property
chemical change
- 6. Multiple Choice
Every pure chemical compound consists of two or more elements
combined chemically
that can be separated by physical change
that cannot be separated
combined in any proportion
- 7. Multiple Choice
What are two properties of all matter?
mass
reactants
volume
boiling point
- 8. Multiple Choice
Substances formed by chemical reaction are called the
reactants
products
solute
solvent
- 9. Multiple Choice
The state of matter in which a material has a definite volume but no definite shape is called
solid
liquid
gas
plasma
- 10. Multiple Choice
If a material is tested and every sample has exactly the same properties and the same composition, it is
homogenous
heterogenous
metallic
metalloid
- 11. Multiple Choice
hydrogen + oxygen = hydrogen dioxide
Choose the reactant(s)
hydrogen
oxygen
hydrogen dioxide
none of these
- 12. Multiple Choice
hydrogen + oxygen = hydrogen dioxide
Choose the product(s)
hydrogen
oxygen
hydrogen dioxide
none of these
- 13. Multiple Choice
Classify the following as a physical change or a chemical change:
Boiling water
physical change
chemical change
neither
- 14. Multiple Choice
Classify the following as a physical change or a chemical change:
burning a piece of wood
physical change
chemical change
neither
- 15. Multiple Choice
Classify the following as a physical change or a chemical change:
slicing a loaf of bread
physical change
chemical change
neither
- 16. Multiple Choice
Classify the following as a physical change or a chemical change:
sharpening a pencil
physical change
chemical change
neither
- 17. Multiple Choice
Classify the following as a physical change or a chemical change:
decomposing mercury(II) oxide
physical change
chemical change
neither
- 18. Multiple Choice
Classify the following as a physical change or a chemical change:
dissolving salt in water
physical change
chemical change
neither
- 19. Multiple Choice
By making several measurements with the same balance, a chemist obtained the following values for the mass of the sample:
5.224g
5.335g
5.559g
Without knowing the actual mass of the sample, we can tell that these measurements have:
good precision
poor precision
- 20. Multiple Choice
The measurement that has only nonsignificant zeros is:
50601 L
60.001 mL
0.00528 mL
1200. mL
- 21. Multiple Choice
Name the quantity being measured below:
133 s
temperature
time
length
mass
- 22. Multiple Choice
Name the quantity being measured below:
55 kg
temperature
time
length
mass
- 23. Multiple Choice
Name the quantity being measured below:
85 dam
temperature
time
length
mass
- 24. Multiple Choice
Name the quantity being measured below:
0.035 K
temperature
time
length
mass
- 25. Multiple Choice
The quantity of 10.2020 has how many significant figures?
6
5
4
none of these
- 26. Multiple Choice
Which of the following is a type of safe laboratory procedure?
leaving backpacks at the door
continuing to use a test tube after dropping it
looking directly down inside a boiling test tube
wearing open sandals with a back ankle strap.
- 27. Multiple Choice
How is 0.00052 written in scientific notation?
52 x 10-5
5.2 x 104
0.52 x 10-3
5.2 x 10-4
- 28. Multiple Choice
The three values below have the same number of:
10.714 m
10.821 m
13.646 m
decimals
values
significant figures
scientific notation
- 29. Multiple Choice
In which step of the scientific method is information obtained through the senses?
drawing conclusions
making observaions
analyzing data
revising a hypothesis
- 30. Multiple Choice
What happens when the data in an investigation does not support the original hypothesis?
The scientist gives up and starts investigating a new topic.
The data must be incorrect and is thrown out.
The hypothesis is revised, and the experiment repeated.
The data is altered to fit the original hypothesis.
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