Chem 2.1A

What is a mixture?

• elements chemically combined
• a combination of different things
• it is found on the Periodic Table 
• it is made of chemical

What type of mixture is this?

• heterogeneous 
• homogeneous

A substance that contains only one type of atom is a(n)

• compound
• element
• heterogeneous mixture
• homogeneous mixture

Which of the following is not a chemical property? 

• rusting 
• boiling 
• rotting 
• burning 

Which one of these is a chemical property?

• melting point
• boiling point
• color
• flammability

Ability to rust is this type of property:

• Physical property
• Chemical property

Which is an example of a physical property?

• ability to react with acid
•  state of matter
• flammability
• ability to react with oxygen

What kind of properties can only be observed when a substance changes into a different substance?

• physical properties
• chemical properties
• liquid properties
• real properties

Properties that can be observed without trying to change the identity of the substance.

• Physical
• Chemical

Which of the following is a chemical change?

• human digestion
• cutting a tree down
• melting a chocolate bar
• Has a density of 1 gm/mL