Physical Science NC Check In Review

Front

How are elements ordered in the modern periodic table?

Back

Elements are ordered by increasing atomic number.

Front

What does reduce mean?

Back

Reduce means consuming less or combining capabilities to get more out of each item.

Front

What is depletion?

Back

Depletion refers to using all the resource up.

Front

How are periods organized on the periodic table?

Back

Periods are organized by increasing atomic number from left to right.

Front

Where does most of Earth's energy come from?

Back

Most of Earth's energy comes from the sun.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.