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WorksheetsChemistry Test Chapter 1
Total questions: 30
Worksheet time: 8hrs 30mins
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.
An example of an element is
salt
mud
water
carbon
An example of a heterogeneous mixture is
sugar
hydrogen
soil
air
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
Water changing states at 100 degrees Celsius is an example of
chemical property
extensive property
physical property
chemical change
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
What are two properties of all matter?
mass
reactants
volume
boiling point
Substances formed by chemical reaction are called the
reactants
products
solute
solvent
The state of matter in which a material has a definite volume but no definite shape is called
solid
liquid
gas
plasma
If a material is tested and every sample has exactly the same properties and the same composition, it is
homogenous
heterogenous
metallic
metalloid
hydrogen + oxygen = hydrogen dioxide
Choose the reactant(s)
hydrogen
oxygen
hydrogen dioxide
none of these
hydrogen + oxygen = hydrogen dioxide
Choose the product(s)
hydrogen
oxygen
hydrogen dioxide
none of these
Classify the following as a physical change or a chemical change:
Boiling water
physical change
chemical change
neither
Classify the following as a physical change or a chemical change:
burning a piece of wood
physical change
chemical change
neither
Classify the following as a physical change or a chemical change:
slicing a loaf of bread
physical change
chemical change
neither
Classify the following as a physical change or a chemical change:
sharpening a pencil
physical change
chemical change
neither
Classify the following as a physical change or a chemical change:
decomposing mercury(II) oxide
physical change
chemical change
neither
Classify the following as a physical change or a chemical change:
dissolving salt in water
physical change
chemical change
neither
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
The measurement that has only nonsignificant zeros is:
50601 L
60.001 mL
0.00528 mL
1200. mL
Name the quantity being measured below:
133 s
temperature
time
length
mass
Name the quantity being measured below:
55 kg
temperature
time
length
mass
Name the quantity being measured below:
85 dam
temperature
time
length
mass
Name the quantity being measured below:
0.035 K
temperature
time
length
mass
The quantity of 10.2020 has how many significant figures?
6
5
4
none of these
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.
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
The three values below have the same number of:
10.714 m
10.821 m
13.646 m
decimals
values
significant figures
scientific notation
In which step of the scientific method is information obtained through the senses?
drawing conclusions
making observaions
analyzing data
revising a hypothesis
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.
