Midterm Review Chemistry

Front

How many significant figures are in the number 10.020?

Back

5

Front

Digesting food is an example of what type of change?

Back

Chemical change

Front

If 1 gallon = 3.78 L, how many gallons are equal to 20.0 L?

Back

5.29 gallons

Front

Chlorine is classified as what type of element?

Back

Nonmetal

Front

What is the charge of aluminum in an ionic bond?

Back

+3

Front

Define significant figures.

Back

Significant figures are the digits in a number that contribute to its precision, including all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into different substances with different properties.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is the formula to convert gallons to liters?

Back

Liters = Gallons × 3.78

Front

What are nonmetals?

Back

Nonmetals are elements that typically lack the properties of metals, such as conductivity and malleability, and are usually found on the right side of the periodic table.