Unit 2 Test REVIEW

Front

What is the maximum number of electrons allowed in the second shell?

Back

8

Front

What is a substance that contains only one kind of atom?

Back

Element

Front

In which period of the periodic table would an element with atomic number 4 be found?

Back

2

Front

What is H₂SO₄ classified as?

Back

Compound

Front

What is the correct hyphen notation for the nuclear symbol of chromium with a mass number of 50?

Back

chromium - 50

Front

What is the maximum number of electrons allowed in the first shell?

Back

2

Front

What is a substance made of two or more different types of atoms bonded together?

Back

Compound

Front

What is the term for a mixture that has a uniform composition throughout?

Back

Homogeneous mixture

Front

What is the term for a mixture that does not have a uniform composition?

Back

Heterogeneous mixture

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.