Mixtures and Solutions Review

a Salad is ............?

• A Homogeneous Mixture

• A Heterogenous Mixture

• A Compound

• An Element

What is the difference between a mixture and a compound?

• A mixture is a combination of substances that can be separated, while a compound is a substance formed when two or more elements are chemically bonded.

• A mixture is a pure substance, while a compound is a combination of different elements.

• A mixture can only be formed by physical means, while a compound can only be formed by chemical means.

• A mixture has a fixed composition, while a compound does not.

What is a mixture?

• A combination of two or more substances that are not chemically combined.

• A single substance that cannot be separated into its components.

• A chemical reaction between two or more substances.

• A solution where one substance is dissolved in another.

What is an example of a heterogeneous mixture?

• Saltwater

• Gravel and sand.

• Vinegar

• Air

What is a homogeneous mixture?

• A mixture that has a uniform composition throughout, such as sugar water.

• A mixture that contains different substances that are easily distinguishable.

• A mixture that has varying composition in different parts.

• A mixture that can be separated by physical means.

Air is Mixture ?

• Yes, air is an example of a solution.

• No, air is a pure substance.

• Yes, air is a compound.

• No, air is a solid.

What is the role of temperature in dissolving substances?

• Increasing temperature usually increases the solubility of solids in liquids.

• Temperature has no effect on the solubility of solids in liquids.

• Higher temperatures decrease the solubility of solids in liquids.

• Temperature only affects the solubility of gases, not solids.

How are Mixture Separated?

• By Using Hand

• By Using a Blender

• By Using a Centrifuge

• By Using a Filter Paper

What is a heterogeneous mixture?

• A mixture that has a uniform composition, such as saltwater.

• A mixture that does not have a uniform composition, such as chicken noodle soup.

• A mixture that contains only one type of substance, like pure water.

• A mixture that can be easily separated by physical means, like sand and iron filings.

What is Colloid?

• A homogeneous mixture that settles over time.

• A heterogeneous mixture where the parts are so small they don't settle out over time.

• A pure substance with uniform composition.

• A mixture that can be easily separated by filtration.