Compounds & Counting Atoms Review

Front

What determines the type of element an atom makes?

Back

The number of protons.

Front

Which of the following is not a compound: HCl, Cl, NaCl, CO2?

Back

Cl.

Front

Is this an example of an element or compound?

Back

Element.

Front

What is the picture displayed? (Options: Atom, Element, Molecule, Compound)

Back

Atom.

Front

Elements in Group 1, the alkali metals, are very reactive because their atoms have _________ valence electrons.

Back

1.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is the difference between an element and a compound?

Back

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

Front

What are valence electrons?

Back

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

Front

What is the chemical formula for water?

Back

H2O.