Midterm Review Chemistry

Front

How many significant figures are in the number 10.020?

Back

5 significant figures.

Front

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

Back

5.29 gallons.

Front

Which element is classified as a metalloid?

Back

Silicon is a metalloid.

Front

Chlorine is classified as a ___?

Back

Chlorine is a nonmetal.

Front

Helium is classified as a ____?

Back

Helium is a noble gas.

Front

What is the definition of a significant figure?

Back

Significant figures are the digits in a number that contribute to its precision.

Front

What is the formula to convert liters to gallons?

Back

Gallons = Liters / 3.78.

Front

Name one property of metalloids.

Back

Metalloids have properties of both metals and nonmetals.

Front

What is the atomic number of Silicon?

Back

The atomic number of Silicon is 14.

Front

What is the state of matter for Chlorine at room temperature?

Back

Chlorine is a gas at room temperature.