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

• atoms
• molecules
• electrons
• elements

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

• formulas
• electrons
• atoms
• chemicals

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

• coefficient
• molecule
• subscript
• atom

→2H₂O
This number tells how many molecules are in a chemical equation.

• coefficient
• subscript
• compound
• element

 2H₂O
How many Hydrogen atoms are present?

• 2
• 4
• 1
• 10

2H₂O
How many Oxygen atoms are present?

• 2
• 4
• 1
• 5

What does this image represent?

• Atom
• Element
• Molecule
• Marshmallows

Atoms are most stable when their outer shell is complete.

• true
• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How do covalent bonds form?

• Donating & receiving valence e- between atoms.

• Opposite slight charges attract each other between compounds.

• Scientists are still not sure how they form.

• Sharing valence electrons between atoms.

A decomposition reaction can be represented as _____________________.

• AB  → A + B
• A + B → AB
• AB + CD → AC + BD
• A + BC → B + AC