Mixtures, Solutions, Compounds

Compounds, Mixtures, and Solutions

What makes a mixture special?

In a mixture all the elements of the mixture keep all the physical properties. They don't get dissolved in the mixture.

What makes a solution special?

• A solution is two substances in which one substance is dissolved by the other

• What two things are dissolved in this picture?

Multiple Choice

To separate a solution you must -

• use sieve

• evaporate.

• use a magnet.

Multiple Select

Choose all that are correct.

A mixture -

• cannot be separated easily

• has 2 or more ingredients

• does not change any physical properties

• can be separated easily

Multiple Choice

A substance that dissolved evenly in another substance -

• solution

• mixture

Multiple Choice

Sand dissolves in water.

• True

• False

Multiple Choice

Cutting, folding, melting all cause a -

• magnetic change

• electrical change

• physical change

Multiple Choice

A combination of two or more substances where each keeps their own properties and can be easily separated -

• solution

• mixture

• solute

Multiple Choice

You know that a substance has dissolved when it-

• becomes a solid
• produces condensation and has water droplets 
• spreads evenly throughout a liquid

Multiple Choice

Combination of two or more different kinds of substances that keep their own physical properties and can be easily separated.

• Solution

• Mixture

• Solubility

• Miscibility

Multiple Choice

This is a type of mixture where one substance dissolves into another

• Solution

• Miscibility

• Compound

• Solubility

Multiple Choice

This is an example of a

• Solution

• Mixture

Multiple Choice

This is an example of a

• Solution

• Mixture

Multiple Choice

A salad would be considered a _____________. 

• mixture
• solution

Multiple Choice

Which of the following would be considered a mixture? 

• lemonade
• sweet tea
• trail mix

Multiple Choice

All of the buttons in this pile

• make the pile a mixture.

• can be separated with a magnet.

• have all the same properties.

• are likely to dissolve in water.

Multiple Choice

If you pour sugar into hot water the sugar will

• disappear
• evaporate
• dissolve
• expand

Multiple Choice

Salt and pepper would be an example of a

• mixture
• solution

Multiple Choice

Salt can be separated from water by using

• tweezers

• sieve

• magnet

• evaporation

Multiple Choice

A cup of coffee would be considered a 

• mixture
• solution

Multiple Choice

As a whole, this bowl of chicken noodle soup would generally be considered a

• mixture

• solution

Elements

• pure substance made of only one kind of atom

• all the atoms of an element are alike

• example: gold, hydrogen, oxygen, etc

• Over 100 known elements on Earth and in the universe

• Humans are made of 4 elements-oxygen, carbon, hydrogen, and nitrogen

Compounds

• a substance whose molecules contain atoms of different element

• a molecule is the smallest bit of a compound

• the properties of a compound are different from the properties of the elements in its molecules

• examples: sugar, salt, oatmeal

• 
  

Multiple Choice

Salt is an example of a compound.

• True
• False

Multiple Choice

What is the role of an electron in an atom?

• live inside the nucleus and carry a neutral charge
• circle the nucleus and have a positive charge
• live inside the nucleus and have a negative charge
• circle the nucleus and have a negative charge

Multiple Choice

Which two particles make up the nucleus of an atom?

• protons and electrons
• protons and neutrons
• molecules and compounds
• neutrons and electrons

Multiple Choice

What is at the center of every atom?

• An electron
• A compound
• A nucleus
• A molecule

Multiple Choice

A chemical change always results in the formation of a:

• explosion
• big mess
• new substance
• new state of matter

Multiple Choice

which one can be found on the periodic table

• Compound 
• Element

Multiple Choice

Element is a

• pure substance
• compound
• mixture
• molecule

Multiple Choice

Is Iron (Fe) an element or a compound?

• Element
• Compound

Multiple Choice

Is water an element or a compound?

• Element
• Compound

Multiple Choice

Which of the following is not a compound?

• HCl
• Cl
• NaCl
• CO2

Multiple Choice

Compounds are made up of two or more atoms physically combined.

• True

• False