Physical Property
Define: physical change
A change in the physical property of matter that can be measured without changing the composition of an object.
Any characteristic that gives a substance the ability to undergo a change that results in a new substance
What is a chemical change?
What's your density formula ?
D = Mass/ Volume
color, density, hardness, shape, mass, melting and boiling points
DOUBLE POINTS!
What chemical changes were observed in our experiment when mixing vinegar and baking soda and the ballon inflated? Bonus points: what was the new substance that was created?
Change in temperature, bubbling or fizzing, production of a new substance, a gas (specifically carbon dioxide)
What is the most common physical change?
A change in state of matter (water changing from solid, to liquid, to gas)
What's is conservtaion of mass ?
Matter cannot be created nor destroyed
DOUBLE POINTS!
These are the 3 states of matter
What are solid, liquid, and gas?
When wood meets too much heat it does what? ITS THAT A CHEMICAL OR PHYSICAL CHANGE
burn AND CHEMICAL CHANGE
True has a sponge that has a mass of 15g and a volume of 3 cubic centimeters what's the density ?
5 grams per centimeter
The physical state of matter depends on it's...
TEMPERATURE
Anna's Dad cleans the house with homemade cleaning liquids. One day, she was watching him. He mixed vinegar with baking soda in a container. The mixture started to create foam and bubble! What did this chemical change produce?
It produced a gas
What happens to a liquid when it reaches 0 degrees Celsius (32 degrees Fahrenheit)?
The temperature at which water changes to a solid (ice)
DOUBLE POINTS!
What is an example of a chemical change?
An apple turning brown, rust, burning something, tarnishing, etc.
What is the temperature at which water freezes?
32 degrees Fahrenheit
Name TWO different indicators of a chemical change.
Color change, temperature change, creation of a new substance, production of a gas, producing an odor, etc.
True or False: A chemical change is irreversible.
True (fruit rotting, wood burning etc.)
cracking eggs and mixing them in a bowl is a...
Physical change