Interaction of matter Review

A student has a container of sugar water. How could they investigate if it’s a homogeneous mixture (solution)?

• A. Filter the water to separate the sugar from the water.

• B. Measure the temperature of the water

• C. Let the water evaporate and check for leftover sugar.

• D. Pour more water into the container.

Tags

NGSS.MS-PS1-2

A mixture of rice and iron nails can be separated using a magnet. What type of mixture is this?     

• A. Pure substance

• B. Homogeneous mixture

• C. Heterogeneous mixture

• D. Solution

Tags

NGSS.MS-PS2-3

Which unknown can be separated using physical properties?

• A. Picture A because it is a mixture

• B. Picture B because it is a mixture

• C. Picture A  because it is a pure substance

• D.Picture B because it is a pure substance

Tags

NGSS.MS-PS1-1

Which of the following is an indicator (evidence) of a chemical change when mixing two substances?

• A. Production of gas bubbles

• B. Decrease in volume

• C. Dissolving of one substance in another

• D. Increase in mass

Tags

NGSS.MS-PS1-2

When baking soda is mixed with vinegar, bubbles form immediately. What evidence suggests that a chemical change has occurred?

• A. The mixture becomes Warmer.

• B. The baking soda dissolves completely.

• C. A gas is produced, forming bubbles.

• D. The vinegar changes color.

Tags

NGSS.MS-PS1-2

What does it mean if two liquids are combined and the container gets colder?

• A. It's just a physical change.

• B. A chemical change is happening.

• C. The liquids are separating.

• D. The liquids are mixing without reacting.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What type of change occurs when a student mixes two chemicals and the container feels hot?

• A physical change, because the temperature is changing.

• A chemical change, because heat is being produced.

• A physical change, because the substances are dissolving.

• D. A chemical change, because bubbles are forming.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

If two liquid like milk and vinegar are mixed and a solid forms at the bottom, what does this mean?

• A physical change has taken place

• A homogenous mixture has formed

• A chemical change has taken place

• No reaction has taken place

Tags

NGSS.MS-PS1-2

If a student mixes two clear chemicals and the mixture changes from clear to Orange yellow, what does this suggest? 

• A chemical change occurred, forming a new substance.

• The mixture is a heterogeneous mixture.

• The mixture absorbed heat, causing a physical change.

• A gas was produced during the reaction.

Tags

NGSS.MS-PS1-2

A student mixed a liquid and a solid in four experiments. Based on the observations below, which one is most likely caused by a chemical reaction? Explain your answer.

• Experiment 1

• Experiment 2

• Experiment 3

• Experiment 4

Tags

NGSS.MS-PS1-2