Chemistry Final Test Revision - Units 1, 2, and 3

Front

Convert 600 inches to centimeters. Which equation is set up correctly?

Back

1 inch = 2.54 cm, so 600 inches = 600 x 2.54 cm = 1524 cm.

Front

What is the definition of MASS?

Back

A measure of the amount of matter in an object.

Front

What happens to the atomic number during alpha decay?

Back

The atomic number decreases by 2.

Front

Express 7.89 x 10^-8 in standard notation.

Back

0.0000000789.

Front

How many electrons does an atom with atomic number 2 have?

Back

2 electrons.

Front

What is the definition of DENSITY?

Back

Density is the mass per unit volume of a substance.

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 in an object, while weight is the force exerted by gravity on that mass.

Front

What is the principle of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is the atomic structure of an atom?

Back

An atom consists of protons and neutrons in the nucleus, with electrons orbiting around the nucleus.