Element vs. Compound

Which of the following is a diatomic molecule?

• CO₂

• CO

• O₂

• C

Tags

NGSS.MS-PS1-1

elements that are stable as single atoms are called. . .

• Molecules

• Atoms

• Monoatomic

• Diatomic

What is the symbol for Hydrogen?

• h

• Hyd

• H₂0

• H

How many atoms of hydrogen are in the following molecule:

HCl

• 0

• 1

• 2

• 3

Pure substances made of 2 or more different elements that are chemically combined in a specific ratio is a . . .

• Atom

• Element

• Compound

• Molecule

Number of atoms in a molecule’s chemical formula is represented by . . .

• Atomic number

• Atomic mass

• Subscript

• Diatomic

A group of 2 or more atoms held together by chemical bonds.

• Element

• Molecule

• Mixture

• Subatomic particles

Pure substances listed on the periodic table that cannot be broken down into any other substances by chemical or physical means

• Elements

• Compounds

• Molecules

• Mixtures

Which of the following is an example of a monoatomic element?

• N₂O

• F₂

• Ne

• NaCl