Chemistry Vocabulary and Quiz

What is the difference between accuracy and precision?

• Accuracy refers to how close a measurement is to the true value, while precision refers to how close measurements are to each other.

• Accuracy and precision both refer to how close measurements are to each other.

• Accuracy refers to the number of significant figures, while precision refers to the unit of measurement.

Which of the following is an example of quantitative data?

• The color of a solution

• The temperature of a liquid in degrees Celsius

• The smell of a chemical

If a scientist measures the mass of a substance three times and gets values of 5.1 g, 5.2 g, and 5.1 g, what can be said about the measurements?

• They are accurate but not precise.

• They are precise but not accurate.

• They are neither accurate nor precise.

Which of the following statements is an inference?

• The liquid is blue.

• The liquid is 50 mL.

• The liquid is likely water because it is clear and has no smell.

Design an experiment to determine the boiling point of an unknown liquid. What is the independent variable (IV) and the dependent variable (DV)?

• IV: Temperature, DV: Time

• IV: Type of liquid, DV: Boiling point

• IV: Volume of liquid, DV: Temperature

What is Avogadro's number?

• 6.022×10^22

• 6.022×10^23

• 6.022×10^24

What is a mole in chemistry?

• The mass of a substance.

• The amount of substance that contains as many entities as there are atoms in 12 grams of carbon-12.

• The volume of a substance.

Which of the following is an example of a chemical bond?

• Ionic bond

• Physical bond

• Magnetic bond

Which type of bond involves the sharing of electrons?

• Ionic bond

• Covalent bond

• Hydrogen bond

Why is the periodic table important in chemistry?

• It lists all known compounds.

• It arranges elements in order of increasing atomic number and groups elements with similar properties.

• It shows the phases of elements.