Chemistry review

Front

What type of charge does an electron have?

Back

Negative

Front

What does the atomic number tell you?

Back

The atomic number indicates the number of protons in the nucleus and the element's place on the periodic table.

Front

What type of charge does a proton have?

Back

Positive

Front

Which of the following describes water?

Back

Water is composed of 2 Hydrogen Atoms and 1 Oxygen Atom.

Front

Which of the following is a chemical change?

Back

Baking brownies is a chemical change.

Front

What is the definition of an atom?

Back

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

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number, showing periodic trends.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms 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.