Unit 4 Review

Glucose (C₆H₁₂O₆) contains atoms of carbon, hydrogen, and oxygen that are chemically bonded together.  What type of matter is glucose?

• Glucose is an element
• Glucose is a compound 
• Glucose is a mixture
• Glucose is a metal

Tags

NGSS.MS-PS1-1

A pure substance that is made from one type of atom is a(n) ______________ .

• Mixture
• Atom
• Element
• Compound

Mixtures

• are made of two different types of atoms chemically bonded together

• Are only liquids

• Cannot be separated

• Can be separated using physical properties

The subscript 2 in H₂O tells us

• There are 2 atoms of oxygen in one molecule of water

• There are 2 atoms of hydrogen in one molecule of water

• There are 2 molecules of water present

• The 2 tells me nothing, you wizard!

Tags

NGSS.MS-PS1-1

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

Which of the following is a sign that a chemical reaction has occurred?

• change in shape
• melting
• formation of a gas
• dissolving

Tags

NGSS.MS-PS1-2

A change where one or more new substances are created.

• Physical Change 
• Chemical Change 

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Tags

NGSS.MS-PS1-2

A mixture is the result of a physical change because...

• The parts can be separated
• A new substance is made
• There is a chemical reaction
• One part of the mixture disappears

If reaction starts with 20g of reactants it should produce 

• a total of 40g of products

• a total of 80 g of products

• a total of 10g of products

• a total of 20g of products

Tags

NGSS.MS-PS1-5