First Semester Exam Review for Chemistry 2024

Front

What is the standard notation for 9.2 x 10^4?

Back

92,000

Front

What is the official SI temperature scale?

Back

Kelvin scale

Front

Convert 416,000,000 to scientific notation.

Back

4.16 x 10^8

Front

How many significant figures are in the measurement 250 m?

Back

2

Front

What is the measure of the amount of matter in an object called?

Back

mass

Front

What is the definition of significant figures?

Back

Digits in a number that contribute to its precision.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter; weight is the force of gravity on that mass.

Front

What is the definition of a mole in chemistry?

Back

A mole is 6.022 x 10^23 particles of a substance.

Front

What is the purpose of the periodic table?

Back

To organize elements based on their properties and atomic structure.