Chemistry Test Chapter 1
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  • Question 1
    900 seconds
    Q.

    Chemistry is a natural science that deals with the study of:

    answer choices

    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.

  • Question 2
    900 seconds
    Q.

    An example of an element is

    answer choices

    salt

    mud

    water

    carbon

  • Question 3
    900 seconds
    Q.

    An example of a heterogeneous mixture is

    answer choices

    sugar

    hydrogen

    soil

    air

  • Question 4
    900 seconds
    Q.

    Which process is a chemical change?

    answer choices

    heating a liquid to boiling

    dissolving a powder in water

    burning a solid

    slicing a solid into two pieces

  • Question 5
    900 seconds
    Q.

    Water changing states at 100 degrees Celsius is an example of

    answer choices

    chemical property

    extensive property

    physical property

    chemical change

  • Question 6
    900 seconds
    Q.

    Every pure chemical compound consists of two or more elements

    answer choices

    combined chemically

    that can be separated by physical change

    that cannot be separated

    combined in any proportion

  • Question 7
    900 seconds
    Q.

    What are two properties of all matter?

    answer choices

    mass

    reactants

    volume

    boiling point

  • Question 8
    900 seconds
    Q.

    Substances formed by chemical reaction are called the

    answer choices

    reactants

    products

    solute

    solvent

  • Question 9
    900 seconds
    Q.

    The state of matter in which a material has a definite volume but no definite shape is called

    answer choices

    solid

    liquid

    gas

    plasma

  • Question 10
    900 seconds
    Q.

    If a material is tested and every sample has exactly the same properties and the same composition, it is

    answer choices

    homogenous

    heterogenous

    metallic

    metalloid

  • Question 11
    900 seconds
    Q.

    hydrogen + oxygen = hydrogen dioxide


    Choose the reactant(s)

    answer choices

    hydrogen

    oxygen

    hydrogen dioxide

    none of these

  • Question 12
    900 seconds
    Q.

    hydrogen + oxygen = hydrogen dioxide


    Choose the product(s)

    answer choices

    hydrogen

    oxygen

    hydrogen dioxide

    none of these

  • Question 13
    900 seconds
    Q.

    Classify the following as a physical change or a chemical change:


    Boiling water

    answer choices

    physical change

    chemical change

    neither

  • Question 14
    900 seconds
    Q.

    Classify the following as a physical change or a chemical change:


    burning a piece of wood

    answer choices

    physical change

    chemical change

    neither

  • Question 15
    900 seconds
    Q.

    Classify the following as a physical change or a chemical change:


    slicing a loaf of bread

    answer choices

    physical change

    chemical change

    neither

  • Question 16
    900 seconds
    Q.

    Classify the following as a physical change or a chemical change:


    sharpening a pencil

    answer choices

    physical change

    chemical change

    neither

  • Question 17
    900 seconds
    Q.

    Classify the following as a physical change or a chemical change:


    decomposing mercury(II) oxide

    answer choices

    physical change

    chemical change

    neither

  • Question 18
    900 seconds
    Q.

    Classify the following as a physical change or a chemical change:


    dissolving salt in water

    answer choices

    physical change

    chemical change

    neither

  • Question 19
    900 seconds
    Q.

    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:

    answer choices

    good precision

    poor precision

  • Question 20
    900 seconds
    Q.

    The measurement that has only nonsignificant zeros is:

    answer choices

    50601 L

    60.001 mL

    0.00528 mL

    1200. mL

  • Question 21
    900 seconds
    Q.

    Name the quantity being measured below:

    133 s

    answer choices

    temperature

    time

    length

    mass

  • Question 22
    900 seconds
    Q.

    Name the quantity being measured below:

    55 kg

    answer choices

    temperature

    time

    length

    mass

  • Question 23
    900 seconds
    Q.

    Name the quantity being measured below:

    85 dam

    answer choices

    temperature

    time

    length

    mass

  • Question 24
    900 seconds
    Q.

    Name the quantity being measured below:

    0.035 K

    answer choices

    temperature

    time

    length

    mass

  • Question 25
    900 seconds
    Q.

    The quantity of 10.2020 has how many significant figures?

    answer choices

    6

    5

    4

    none of these

  • Question 26
    900 seconds
    Q.

    Which of the following is a type of safe laboratory procedure?

    answer choices

    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.

  • Question 27
    900 seconds
    Q.

    How is 0.00052 written in scientific notation?

    answer choices

    52 x 10-5

    5.2 x 104

    0.52 x 10-3

    5.2 x 10-4

  • Question 28
    900 seconds
    Q.

    The three values below have the same number of:

    10.714 m

    10.821 m

    13.646 m

    answer choices

    decimals

    values

    significant figures

    scientific notation

  • Question 29
    900 seconds
    Q.

    In which step of the scientific method is information obtained through the senses?

    answer choices

    drawing conclusions

    making observaions

    analyzing data

    revising a hypothesis

  • Question 30
    900 seconds
    Q.

    What happens when the data in an investigation does not support the original hypothesis?

    answer choices

    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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