Molecule

2H₂O
How many H₂O molecules are present?

• 1

• 4

• 2

• 8

Tags

NGSS.MS-PS1-1

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.

How are covalent bonds formed?

• Sharing of electrons

• Transfer of electrons

Which of these items is made up of one or more molecules?

• Gold

• Hydrogen

• Salt 

• Neon 

Tags

NGSS.MS-PS1-1

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

• 0

• 1

• 2

• 3

Tags

NGSS.MS-PS1-1

What is the term for combining 2 or more atoms together?

• atoms

• elements

• molecules

• compounds

Tags

NGSS.MS-PS1-1

Which of the following chemical formulas represents a compound? 

• C₃

• O₂

• CH₃CHO

• H₂

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element

• compound

• mixture

Tags

NGSS.MS-PS1-1

Are these molecules also compounds?

• YES

• NO

Tags

NGSS.MS-PS1-1

What is a molecule?

• A group of atoms bonded together

• A single atom

• A type of chemical reaction

• A phase of matter

Tags

NGSS.MS-PS1-1