Chemical Formulas PS8.1.3

Coefficients in chemical formulas...

• Multiply just the first atom

• Add to the subscripts at the end of the molecule

• Multiply elements without subscripts

• Multiply EVERYTHING!

How many elements are in this chemical formula?

• 7

• 8

• 3

• 4

Tags

NGSS.MS-PS1-1

How many atoms are in this chemical formula?

• 7

• 8

• 3

• 4

Tags

NGSS.MS-PS1-1

What word describes a group of atoms bonded together?

• Atom

• Particle

• Molecule

• Element

Tags

NGSS.MS-PS1-1

What word describes the smallest unit of matter (stuff)?

• Molecule

• DNA

• Atom

• Element

Tags

NGSS.MS-PS1-1

Molecule or atom?

• Molecule

• Atom

Tags

NGSS.MS-PS1-1

What does a number behind a letter in a chemical formula mean?

ex. CO₂

• That is the number of atoms of the letter it's behind

• That is the number of atoms of the 2nd element

• That is the number of molecules or groups

• None of the above.

Tags

NGSS.MS-PS1-1

Molecule or atom?

• Molecule

• Atom

Tags

NGSS.MS-PS1-1

Molecule or atom?

• Molecule

• Atom

Tags

NGSS.MS-PS1-1

What would this formula be?

• C₂O

• CO₂

• 2CO

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5