physical changes
Give an example of a physical change.
cutting hair
ripping paper
glass breaking
What are the three states of water?
What are solid (ice), liquid (water), and gas (water vapor)?
Give an example of a chemical change.
steel rusting
baking a cake
bleaching hair
What happens when you take a cup of ice water outside on a hot day and the cup gets water on the sides?
Condensation
Water that is heated up and bubbling is called.
Boiling
What is a chemical change?
What is a change that results in the formation of new substances?
What is added to cause ice to melt?
heat
What is condensation?
What is the process where water vapor cools and turns back into liquid water?
What is the difference between a physical change and a chemical change?
What is a physical change does not create new substances, while a chemical change does
The process of water being heated up and turning into water vapor.
Evaporation
What happens to water when it freezes?
What is it turns from liquid to solid?
What happens to the properties of substances during a chemical change?
The properties change, increase in temperature, change in color
Why is boiling a physical change?
Water (liquid) is heated up and turns into water vapor. It is only changing states, it does not create something new.
Describe the process of evaporation.
What is when liquid water turns into water vapor due to heat?
Why is cooking considered a chemical change?
Because it changes the ingredients into new substances with different properties.