Matter and Chemistry Review

Which of the following is an example of matter?

• Sunlight

• Gravity

• Helium

• Heat

Which of the following is a chemical property?

• Color

• Flammability

• Volume

• Length

What is the atomic mass of Oxygen as shown in the periodic table?

• 8

• Oxygen

• 15.999

• O

What remains unchanged during a physical change (what stays the same)?

• The shape and size of the matter

• The state of the matter

• The atoms and the substance itself

• The volume of the matter

If two objects have the same volume but different masses, the object with the greater mass is considered to be:

• Less dense

• More dense

• The same density

• Not matter

What is an element?

• A pure substance made up of two or more different types of atoms

• A mixture of different substances found on the Periodic Table

• A pure substance made up of one type of atom

• A compound consisting of molecules bonded together

What defines a molecule?

• A pure substance found on the Periodic Table

• Two or more different elements bonded together

• Two or more of the same atoms bonded together

• A single atom

What is a compound?

• A mixture of two or more molecules

• Two or more of the same elements bonded together

• Two or more different elements bonded together

• A single element found on the Periodic Table

Identify the image that represents a simple molecule with one type of atom.

• 
• 
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Which statement is true about alkaline earth metals?

• They do not react with oxygen or water

• They are found only in compounds

• They are very reactive

• They are gases at room temperature