Mixtures, Solutions, Colloids, and Suspensions

What is the definition of a mixture?

• Substances in fixed proportions

• Combination of two or more substances in any proportion

• Salad and mixing things

• a solution

What is a type of mixture?

• Suspensions

• Solutions

• Colloids

• Homogenous

What is a solute?

• a heterogenous mixture with medium particles

• a homogenous mixture with tiny particles

• the substance something dissolves in to form a solution

• the substance that dissolves to form a solution

Tags

NGSS.MS-PS1-2

What is a solution?

• has big particles, can be filtered out

• has medium particles, can NOT be filtered out

• has small particles, can be filtered out

• has tiny particles, can NOT be filtered out

What is a suspension?

• has large particles

• has small particles

• has medium particles

• has mediocre particles

How close a measurement is to the accepted value is called..

• Accuracy

• Precision

• Significant

• Estimate

It is a measure of how close measurements come to each other when they are made in the same way

• Accuracy

• Precision

• Error

• Extrapolation

Which observation(s) might be used as evidence that a chemical reaction occurred?

• Color change
• Odor change
• Properties change
• All of the above

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A candle wick burning is an example of a _________________________

• physical reaction

• condensation

• neutrons

• chemical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

• mixture

• pure substance

• compound

• element

Tags

NGSS.MS-PS1-1