Substances and Mixtures

Substances VS. Mixtures

They're NOT the same thing!?

Multiple Choice

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

Multiple Choice

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Multiple Choice

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Multiple Choice

Electrons can be found in

• The protons
• The nucleus
• Electron Clouds

The Pure Substances

The Pure Substances

Multiple Choice

What two types of matter are pure substances?

• elements and solutions

• compounds and mixtures

• elements and compounds

• mixtures and solutions

Multiple Choice

Which of these is a compound?

• Aluminium (Al)

• Carbon Dioxide (CO2)

• Nitrogen (N)

• Sand

More on ​Homogeneous AKA SOLUTIONS

​Recall: Solubility is a PHYSICAL CHANGE.

​

​Even though we are creating a physical change, the amount of matter we have before and after the change remains the SAME.

​Solvent + Solute = SOLUTION

​Notice the uniform consistency throughout!

Multiple Choice

__________ are made up of solutes and solvents.

• Solutions
• Suspensions
• Heterogeneous Mixtures
• Pure Substances

Multiple Choice

What is a substance that is dissolved in another substance? 

• solution
• solute
• solvent
• compound

Multiple Choice

What is a solvent?

• The substance that does the dissolving in a solution.
• The substance that is being dissolved in a solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

Multiple Choice

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

• stir the powder in the liquid
• freeze the mixture
• add more powder to the liquid
• store the mixture in a dark place

Multiple Choice

This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

Multiple Choice

The picture shown here is what type of mixture?

• homogeneous
• hetergeneous
• pure substance
• element

Multiple Choice

A mixture that is uniform and well mixed is _____.

• homogeneous
• hetergeneous
• pure substance
• compoud

Multiple Choice

Chex mix contains pretzels, rye chips and chex cereal. It is an example of a(n)

• solution/ homogeneous mixture

• heterogeneous mixture

• element

• compound

Multiple Choice

Air is:

• An element

• A compound

• Homogeneous Mixture

• Heterogeneous Mixture

Multiple Choice

Italian dressing is a

• solution
• suspension
• colloid

Multiple Choice

If a spoonful of sugar is mixed in a glass of water, what is the water called? 

• solute
• solution
• solvent
• element 

Multiple Choice

A snow globe would be an example of a __________________.

• colloid

• solution

• suspension

Multiple Choice

Milk and gelatin are examples of __________________.

• suspensions

• colloids

• solutions

Multiple Choice

What type of substance is pictured?

• element

• compound

• mixture

• solution

Multiple Choice

Coffee, mouthwash, and vinegar are examples of __________________ mixtures.

• heterogeneous

• homogeneous

• pure

Multiple Choice

In a ______________, one substance is dissolved in another substance.

• solution

• suspension

• colloid

Multiple Choice

A _________________ mixture is one where the substances are evenly spread throughout.

• heterogeneous

• homogeneous

• pure substance