Chemistry Quiz exam 1

What is the most important step in the scientific method?

• Observation

• Hypothesis

• Theory

• Law

• None of the above

Tags

NGSS.HS-PS1-2

The formula H2O is an example of which domain of chemistry?

• Macroscopic

• Microscopic

• Symbolism

• Macroscopic, Microscopic, and Symbolism

• None of the above

Tags

NGSS.MS-PS1-1

What is the state of matter that takes the shape of a container and fills the container?

• Solid

• Liquid

• Gas

• Plasma

• None of the above

What is the difference between weight and mass?

• Mass depends on the location of the object whereas weight is constant everywhere

• Mass is constant everywhere whereas weight depends on the object's location

• Mass depends on the object's volume whereas weight depends on the object's location

• Mass is constant everywhere and weight is constant everywhere

• None of the above

Carbon dioxide (CO2) is an example of a(n) _______.

Tags

NGSS.MS-PS1-1

The burning of gasoline is a(n) _______.

• Intensive property

• Physical change

• Extensive property

• Chemical change

• None of the above

Tags

NGSS.MS-PS1-5

What is the density, with correct significant figures and units, of a solid that displaces water from 13.5 mL to 22.4 mL and the mass is 69.658 g?

• 7.8 g/mL

• 7.8 g/cm³

• 7.83 g/mL

• 7.83 g/cm³

• None of the above

What is the percent error when the experimental density of an object is 8.43 g/cm³ and the actual density is 8.96 g/cm³?

• 5.9 %

• 94 %

• -5.9 %

• -94 %

• None of the above

The percent error is 5.9% and the percent deviation is 0.2 %.

• The experiment was imprecise but accurate

• The experiment was imprecise and inaccurate

• The experiment was inaccurate but precise

• The experiment was accurate and precise

• None of the above

Express the result of log (1.000 × 10⁻⁷) with the correct number of significant figures.

• 7

• 7.0

• 7.00

• 7.000

• None of the above