Chemistry Midterm

Front

What is the atom with the largest atomic radius in Group 18?

Back

Rn (Radon)

Front

What is a pure substance that cannot be broken down into other substances?

Back

Element

Front

What happens when a sodium atom loses an electron?

Back

It becomes positively charged.

Front

How many protons does an atom with atomic number 6 have?

Back

6 protons.

Front

What type of bond forms between Beryllium (Be) and Fluorine (F)?

Back

Ionic bond.

Front

What is the definition of an element?

Back

A pure substance that consists of only one type of atom.

Front

What is the definition of a compound?

Back

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

Front

What is the definition of a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is the charge of an ion formed when an atom loses an electron?

Back

Positively charged ion (cation).

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.