Chemical/Physical Changes, Mixtures/Solutions, Sum of Parts

what is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

what is the definition of physical change?

• any change that results in the formation of new chemical substances. 
• rusting
• changes affecting the form of a chemical substance, but not its chemical composition.
• any property that is measurable, whose value describes a state of a physical system

what is burning?

• physical change
• physical property
• chemical change
• chemical property

what is digestion?

• body function
• chemical change
• physical change

One cup of water is left outside for two days when it was checked there was only half a cup left. What happened?

• evaporation; chemical change
• condensation; physical change 
• evaporation; physical change
• condensation; chemical change

what happens when water freezes?

• ice is formed; chemical property
• cold water is formed; physical change
• ice is formed; physical change
• cold water is formed; chemical change

energy is a chemical property

• true
• false

melting is a chemical change

• true 
• false

Is glass breaking a chemical or phyiscal change?

• chemical
• physical

Is a a rusting bicycle a chemical or physical change?

• chemcial
• physical