ACAP

Explain why the model of this chemical reaction obeys the Law of Conservation of Matter.

• because there are the same number of atoms of each element shown on both sides

• because they both start and end with diatomic (two-atomed) molecules

• because they both start and end with the same types of particles

• because they both start and end with two sets of particles

Tags

NGSS.MS-PS1-5

If there are 2 grams of product produced by the chemical reaction, how many grams of reactant were consumed?

• 0 grams

• 1 gram

• 2 grams

• 4 grams

Tags

NGSS.MS-PS1-5

When Holly injures her shoulder playing baseball, she uses an instant ice pack to reduce the swelling. She breaks the inner, activator portion of the instant cold pack releasing the solid urea into the surrounding water. What process does Holly observe as she uses the cold pack?

• Urea absorbs and releases heat energy into the surroundings.

• When the urea dissolves it absorbs heat and the cold pack gets colder.

• The urea causes the surroundings heat up as the cold pack releases energy.

• As the urea mixes in the water it releases heat making the cold pack colder.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Select all of the examples of mixtures

• lemonade

• iced tea

• sugar

• saltwater

• aluminum oxide

If you slow the motion of water molecules down, they are more likely to become

• a gas

• hotter

• colder

• absorbed

Tags

NGSS.MS-PS1-4

A solution is a mixture that looks exactly the same everywhere. These mixtures cannot be separated by a filter. Which of these mixtures could use a filter to separate the mixture?

• A mixture of rocks and oil.

• A mixture of salt and water.

• A mixture of sugar and water.

• A mixture of juice and water.

In a solution of sugar and water. Which is the solvent?

• Sugar

• Water

In a solution of chocolate milk, which the solute? Chocolate or milk?

• Chocolate

• Milk

Evidence of a chemical change includes

• change in size

• change in weight

• change in color

• change in shape

Tags

NGSS.MS-PS1-2

How many protons does Hydrogen have?

• 1

• 2

• 0

• 3

Tags

NGSS.MS-PS1-1