PE 1b Test Prep

Imagine Nico, Jasper, and Ian are playing a game of 'Chemistry Whiz'. They come across a challenge where they need to correctly identify the AMU of Nitrogen. Who is correct?

• Nico says it is 7

• Jasper thinks it is 14.007

• Ian believes we don't have enough information.

• Or, all they all correct?

Diego is solving the following chemistry equation:

2H₂ + 1O₂ → 2H₂O.

He thinks the reactant (left) and product (right) side have an equal amount of hydrogen atoms. Is Diego correct?

• Yes

• No

Tags

NGSS.MS-PS1-5

Monty is also solving the same equation:

2H₂ + 1O₂ → 2H₂O.

He thinks the reactant (left) and product (right) side don't have an equal amount of oxygen atoms. Is Monty correct?

• Yes

• No

Tags

NGSS.MS-PS1-5

Lewis and Clover are having a friendly debate. They are trying to figure out the mass of H₂. Can you help them out?

• The mass is 1.0078

• We don't have enough information

• The mass is 2.0156

Tags

NGSS.MS-PS1-1

Imagine Elijah is a tiny scientist exploring the world of atoms during a chemical reaction. After looking at the total mass of both sides, was mass created or destroyed?

• Atoms remain unchanged, just like their adventurous spirit

• Atoms were destroyed, like their fear of the unknown

• Atoms were created, like their new discoveries

• Atoms were rearranged, like their scientific theories

Tags

NGSS.MS-PS1-5

Now Elena and Isabella want to balance the previous chemical equation. Does this equation have coefficients?

• Yes

• No

Tags

NGSS.MS-PS1-5

Emilio knows there are invisible coefficients.

What are the coefficients?

Tags

NGSS.MS-PS1-5

Caleb has balanced the equation using structural formulas. What are the new coefficients at the bottom?

Tags

NGSS.MS-PS1-5

Miss Ana and Mr. Ring are playing 2K25. She chose the Los Angeles Reactants and he chose the Los Angeles Products. Miss Ana chose Al + O₂ as teammates and Mr. Ring chose Al₂O₃ as teammates_. If you're the coach how would you draw this on your whiteboard?

• Al + O₂

• Al₂O₃

• Al + O₂ → Al₂O₃

• Al₂O₃ → Al + O₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Now you are the ref. Before the game begins, both teams must be balanced. Can the Los Angeles Reactants add 1 oxygen atom?

Al + O₂ → Al₂O₃

• No, that's a TECHNICAL FOUL!

• Yes

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5