Chemistry Midterm Review2

Front

How many electrons does Silicon (Si) contain?

Back

14

Front

What is an example of a physical property?

Back

Silver is shiny.

Front

Matter is anything that...

Back

Has mass and takes up space.

Front

Water freezing into ice is an example of a...

Back

Physical Change.

Front

Which element is represented by this orbital notation? (Sodium)

Back

Sodium.

Front

What is the atomic number of Sodium?

Back

11

Front

Define a chemical change.

Back

A process where substances combine or break apart to form new substances.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the pH scale used for?

Back

To measure the acidity or basicity of a solution.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.