Semester 1 Assessment 2021

What is a chemical symbol?

• A unique particle of matter that is the fundamental building block of matter

• An individual particle of matter

• The mass of an atom

• A shorthand notation of one or two letters that represent the name of the element

What is mass in science?

• The amount of observable matter something has

• The amount of volume something has

• The amount of money something has

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What are the elements that make up the molecule and how many of each element are present? 6CH₂O

• 1 carbon, 2 hydrogen, 1 oxygen

• 1 carbon, 2 hydrogen, 6 oxygen

• 6 carbon, 12 hydrogen, 6 oxygen

• 6 carbon, 6 hydrogen, 12 oxygen

Tags

NGSS.MS-PS1-1

Select all of the following that are ELEMENTS.

• Magnesium Nitrate - Mg(NO₃)

• Aluminum - Al

• Chromium - Cr

• Acetylene - (C₂H₂)

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

All matter is made of invisible particles called _____.

• atoms

• mixtures

• adams

• compounds

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Identify what the provided example is: Cu

• Atomic Mass

• Name

• Elements Name

• Chemical Symbol

Jasmine mixed 4 grams of baking soda and 20 grams of vinegar in a flask. The chemicals bubbled (carbon dioxide gas was produced) and the temperature of the container decreased. The mass after the reaction was 22 grams. What must have happened to the missing 2 grams of mass?

• It was destroyed during the chemical reaction

• It left the flask as gas

• It was absorbed by the other chemicals

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

What is the conservation of mass?

• The scientific rule that says that matter can be created.

• The scientific rule that says that matter can be destroyed through a chemical reaction.

• The scientific rule that says the number of atoms before and after a chemical reaction must be the same.

• The scientific rule that says that the type of atoms before or after a reaction can be changed if they go through a chemical change.

Tags

NGSS.MS-PS1-5

Which of the following happens during a chemical reaction?

• Atoms are created.

• Atoms are destroyed.

• Atoms are rearranged.

• Atoms change into new types of atoms.

Tags

NGSS.MS-PS1-5

Where is the energy stored when the atoms are rearranged in a chemical reaction?

• The inside

• The outside

• The bonds

• The oxygen