Physical vs Chemical

what is a physical change? 

• Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.
• Chemical change is any change that results in the formation of new chemical substances. At the molecular level, chemical change involves making or breaking of bonds between atoms. These changes are chemical. 

What is a chemical change?

• A property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed. 
• Chemical change is any change that results in the formation of new chemical substances. At the molecular level, chemical change involves making or breaking of bonds between atoms. These changes are chemical.

What is a example of a physical change?

• Sugar made into caramel
• Rusted Metal
• Burnt Toast
• Broken Crackers

Is ice melting a chemical or physical change?

• Chemical
• Physical

What is the difference between a chemical and physical change? 

• They have different names
• A physical change in a substance doesn't change what the substance is. In a chemical change where there is a chemical reaction, a new substance is formed and energy is either given off or absorbed
• A physical change is when something is being mixed. A chemical change can't be changed

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

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

what is burning?

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

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

Is hammering wood together to build a house a chemical or physical change?

• chemical
• physical

Is bleaching your hair a physical or chemical change?

• physical
• chemical