The video tutorial covers the formation and modeling of molecules, emphasizing the importance of atom arrangement in determining the properties of substances. It explains how to write chemical formulas and model molecules, using examples like salt, sugar, and carbon-based substances. The tutorial includes practice exercises for drawing molecular models from chemical formulas, reinforcing the concepts taught.

What is the smallest unit that makes up all matter?

• Molecule

• Atom

• Element

• Compound

Tags

NGSS.MS-PS1-5

What is the chemical formula for a molecule made up of one sodium atom and one chlorine atom?

• C6H12O6

• CO2

• H2O

• NaCl

Tags

NGSS.MS-PS1-1

Which of the following substances is made entirely of carbon but has different properties due to its atomic arrangement?

• Sugar

• Diamond

• Water

• Salt

Tags

NGSS.MS-PS1-1

How would you write the chemical formula for a molecule with one nitrogen atom and three hydrogen atoms?

• NH3

• N3H

• H3N

• N2H3

Tags

NGSS.MS-PS1-1

In the chemical formula C2H6O, what does the '2' represent?

• Two oxygen atoms

• Two carbon atoms

• Two molecules

• Two hydrogen atoms

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in the molecule with the chemical formula C3H8?

• 5

• 8

• 3

• 6

Tags

NGSS.MS-PS1-1

What is the correct way to write the chemical formula for a molecule with three carbon atoms and eight hydrogen atoms?

• CH38

• C8H3

• H8C3

• C3H8

Tags

NGSS.MS-PS1-1

If a molecule has the chemical formula SO3, how many oxygen atoms does it contain?

• 1

• 4

• 2

• 3

Tags

NGSS.MS-PS1-1

In the chemical formula AlBr3, what does the '3' indicate?

• Three bromine atoms

• Three bonds

• Three aluminum atoms

• Three molecules

Tags

NGSS.MS-PS1-1

How would you model the molecule H2O2?

• One hydrogen atom and one oxygen atom

• One hydrogen atom and two oxygen atoms

• Two hydrogen atoms and one oxygen atom

• Two hydrogen atoms and two oxygen atoms

Tags

NGSS.MS-PS1-1