Chemistry Quiz

Which of the following is an example of qualitative information about a substance?

• Color of the substance

• Melting temperature of the substance

• Mass of the substance

• Volume of the substance

• Boiling temperature of the substance

Which of the following statements is true of a chemical equation?

• It is a representation of only a physical change rather than a chemical or molecular change.

• It shows that the reactants on the left side of an equation produce the products on the right side of the equation.

• The number of atoms found in the reactants doubles in the products.

• The number of atoms found in the reactants halves in the products.

• The identity of the substance in a chemical equation is preserved.

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NGSS.HS-PS1-7

Which of the following is NOT an example of an intensive property of matter?

• Color

• Boiling point

• Density

• Mass

• Thermal conductivity

Which of the following is NOT a correct name–symbol combination?

• Phosphorus, P

• Iron, Fe

• Chlorine, Cl

• Potassium, K

• Sodium, So

A hypothesis is a _____.

• tentative explanation or predication based upon experimental observations

• well-tested unifying principle that explains a body of facts

• set of experiments designed to test a theory

• set of quantitative data

• concise statement of behavior that is always the same under the same conditions.

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NGSS.HS-PS1-2

Which of the following statements concerning green chemistry is NOT correct?

• It is better to prevent waste than to treat or clean up waste after it is formed.

• Synthetic methods should be designed to use and generate substances that possess little or no toxicity to human health or the environment.

• Substances used in a chemical process should pose minimal risk for accidents.

• Raw materials should be renewable whenever technically and economically practical.

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NGSS.HS-ESS3-4

NGSS.HS-ETS1-3

Which one of the following is most likely to be a homogeneous mixture?

• plain yogurt

• blood

• gasoline

• milk and water

• hot milk and coffee powder

Balancing chemical equations is an application of

• The law of conservation of matter

• The law of conservation of energy

• The law of multiple proportions

• The law of conservation of matter and energy

• The conversion of a hypothesis to a law

Tags

NGSS.HS-PS1-7

Which of the following is not a base SI unit?

• Kilogram

• Ampere

• Calorie

• Second

• Meter

The wavelength of light emitted from a particular red diode laser is 651 nm. What is the wavelength in meters?

• 6.51 × 10¹¹ m

• 6.51 × 10⁻² m

• 6.51 × 10⁻⁴ m

• 6.51 × 10⁻⁷ m

• 6.51 × 10⁻⁹ m

Tags

NGSS.HS-PS4-1