Understanding Mixtures and Reactions

What is the term for a mixture in which particles can be seen and easily separated by settling or filtration?

• Solution

• Suspension

• Colloid

• Mixture

Which of the following best describes a colloid?

• A mixture that forms when one substance dissolves another

• A mixture containing small, undissolved particles that do not settle out

• A liquid substance capable of dissolving other substances

• A measure of how much solute can dissolve in a given solvent at a given temperature

Identify the term that describes a change in a substance that does not involve a change in the identity of the substance.

• Chemical change

• Physical change

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.MS-PS1-4

Which of the following is a substance that is dissolved in a solution?

• Solvent

• Solute

• Mixture

• Reactant

What is the role of a solvent in a solution?

• It is a substance that is dissolved

• It is a liquid substance capable of dissolving other substances

• It is a measure of how much solute can dissolve

• It is a chemical substance present at the start of a reaction

Which of the following best describes an exothermic reaction?

• A reaction that absorbs energy in the form of heat

• A chemical reaction in which heat is released to the surroundings

• A change that occurs when one or more substances change into entirely new substances

• A mixture that forms when one substance dissolves another

Tags

NGSS.MS-PS3-3

How does solubility relate to temperature?

• Solubility is unaffected by temperature

• Solubility measures how much solute can dissolve in a given solvent at a given temperature

• Solubility is the same as the rate of reaction

• Solubility is a measure of the speed of a chemical reaction

Tags

NGSS.MS-PS1-4

Explain why a suspension is different from a solution.

• A suspension is a mixture where particles can be seen and easily separated, while a solution is a mixture where one substance dissolves another

• A suspension is a mixture that forms when one substance dissolves another, while a solution contains undissolved particles

• A suspension is a liquid substance capable of dissolving other substances, while a solution is a measure of solubility

• A suspension is a chemical reaction, while a solution is a physical change

What is the difference between a reactant and a product in a chemical reaction?

• A reactant is a substance produced in a chemical reaction, while a product is present at the start

• A reactant is present at the start of a chemical reaction, while a product is produced in the reaction

• A reactant is a measure of solubility, while a product is a measure of rate

• A reactant is a mixture, while a product is a solution

Tags

NGSS.MS-PS1-5

Which process involves making a solution out of a substance or turning it into a liquid?

• Dissolve

• Suspension

• Colloid

• Solubility