Do Now Test (1-18)

Front

How do you calculate the number of neutrons in an atom of an element?

Back

Atomic Mass minus the Atomic Number equals the number of neutrons.

Front

How many valence electrons does the element Potassium, K, contain?

Back

1

Front

True or False: Hydrogen chloride, vinegar, and salt are classified as organic.

Back

FALSE

Front

Is this chemical equation balanced or unbalanced? 2KClO3 → KCl + 3O2

Back

Unbalanced

Front

Gold has how many protons?

Back

79

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is a Bohr model?

Back

A diagram that shows the arrangement of electrons in an atom.

Front

What are valence electrons?

Back

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

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 does it mean for a chemical equation to be balanced?

Back

The number of atoms of each element is the same on both sides of the equation.