Unit 1 Test B 2023-2024

This is a molecule of water. Water has two type of atoms which make it...

• An Element

• A Compound

Tags

NGSS.MS-PS1-1

Ashtyn wrote down some chemical formulas on the board, which ones are elements. (remember, elements only have one Capital Letter)

• H_{2 and} B

• CaCl_{2 and} B

• NaCl and CO₂

• CaCl_{2 and} NaCl

Which one is the simplest pure substance?

• One single element

• A compound with 12 elements

How many atoms does one element have

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

What kind of pure substance forms when I combine two or more elements?

• An element

• A compound

Tags

NGSS.MS-PS1-1

Olivia is watching her teacher do an experiment. As she is watching, what should she be looking for to identify the experiment as a chemical reaction?

• Bubbles, showing that there is gas being made.

• A weird color change.

• A big temperature change

• All of the above

Tags

NGSS.MS-PS1-2

When Mr. Garcia Mixes two liquids together and a solid substance forms, what is it called?

• A precipitate

• A solution

• A definitely wrong answer

• A molecule

Tags

NGSS.MS-PS1-2

Which answer choice correctly lists only elements?

(Remember that elements only have 1 Capital Letter)

• Mg, NO₂, Mg, B

• N, O, Al, Zn

Which one of these is a compound?

(Remember, a compound has more than one type of atom)

• 
• 

Tags

NGSS.MS-PS1-1

Amelia had a beaker with a small amount of baking soda. She added a few drops of vinegar to the baking soda and saw fizzing and bubbling. After looking at the bubbles, which of these can Amelia say was made.

• A gas was made.

• It got very hot.

• It was magnetic.

• It was super conductive.

Tags

NGSS.MS-PS1-2