Molecules Final Practice

What do we call a chemical substance made up of atom from 2 or more different types of elements bonded together?

• formula

• atom

• subscript

• compound

All ____________ are made up of two or more atoms bonded together.

• atoms
• molecules
• electrons
• elements

H₂O₂← ?
This number tells the number of atoms present.

• coefficient
• molecule
• subscript
• atom

The smallest unit of an element that still holds all the properties of the element is an _____________.

• atoms

• molecules

• electrons

• elements

What does this image represent?

• Atom

• Element

• Compound

• Marshmallows

What is a valence electron?

• The sum of neutrons and protons.

• The # of electrons in the last orbital.

• A type of bond.

• A popular compound.

Carbon dioxide (CO₂) contains how many atoms of oxygen?

• 0
• 1
• 2
• 3

Bonds between atoms in a molecule form as a result of the sharing  of?

• formulas
• electrons
• atoms
• chemicals

When _______ form, the elements lose their individual chemical properties and take on new ones. For example, Hydrogen is a gas at room temperature, but when Hydrogen bonds to oxygen to form water it become a liquid.

• compounds

• atoms

• subscript

• formula

The periodic table is a collection of elements organized by the number of ____________ in the atom of each element?

• protons

• elements

• compounds

• chemicals