NGSS Chemistry Fall Final Review

Front

What is a group in the periodic table?

Back

A group is a column in the periodic table where elements share similar chemical properties and have the same number of valence electrons.

Front

What is subduction in geology?

Back

Subduction is the process where one tectonic plate moves under another plate and sinks into the mantle.

Front

Why are halogens highly reactive?

Back

Halogens are highly reactive because they have seven valence electrons and need one more to achieve a full outer shell.

Front

What is energy?

Back

Energy is the ability to do work or cause change.

Front

What does atomic number represent?

Back

The atomic number represents the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a period in the periodic table?

Back

A period is a row in the periodic table where elements have the same number of electron shells.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is the difference between renewable and non-renewable energy?

Back

Renewable energy comes from sources that can be replenished naturally, while non-renewable energy comes from sources that are finite and will eventually run out.

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 ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net charge.