Chemical and Physical Changes
A ____________ ____________ is the change of something's shape, size, state of matter. Nothing new is created.
Physical Change
____________ is what takes up space in an object
Volume
A _____________ mixture is when you see the different parts of the mixture and it can be easily separated.
Heterogenous
A __________ has no definite shape but does have a definite volume. It's particles are pretty close together but not touching.
liquid
There are ________ states of matter. List the states of matter
3; solid, liquid, and gas
A ____________ ___________ happens when something new is created, and it cannot be reversed or undone.
Chemical Change
___________ is anything that has mass and volume.
Matter
A _______________ mixture is when everything mixed together looks the same and it cannot be easily separated.
Homogenous
A __________ has a definite shape and a definite volume. Its particles are packed closely together.
Solid
Think back to our Solubility lab. Which mixture had HIGH solubility?
Baking Soda
Which is an example of a CHEMICAL CHANGE:
A. melting butter
B. A broken pencil
C. Baking bread
D. Slicing bread in half
C. Baking Bread
__________ is the amount of matter an object has.
Mass
Choose which is an example of a Homogenous Mixture:
A. Pizza
B. Fruit Salad
C. Coin jar
D. Smoothie
D. Smoothie
A ________ has no definite shape and no definite volume. Its particles are far apart.
gas
True or False:
Baking cookies is a physical change
False
Which is an example of a physical change?
A. Fireworks exploding
B. Baking bread
C. Baking cookies
D. Breaking a pencil
True or False:
A chemical change is a change in shape, size or state of matter and does not create anything new.
False
Choose which is an example of a Heterogenous Mixture:
A. Fruit Salad
B. Salt Water
C. Smoothie
D. Coffee
A. Fruit Salad
What process happens when liquid changes to a solid?
freezing
True or False:
A gas turns into a liquid during the process of condensation
True
Give 1 example of a physical change and 1 example of a chemical change.
Physical change - anything that changes in shape/size/state of matter
Chemical change - something new that is created.
True of False
A Homogenous mixture is when everything mixed together looks the same and it cannot be easily separated.
True
Give an example (not mentioned before) of a Homogenous mixture and an example of a Heterogenous mixture.
Homogenous - looks the same
Heterogenous - see the different parts of the mixture.
What process takes place when liquid turns into gas?
Evaporation
You know a chemical reaction has taken place when you see...
1. Gas bubbles
2. Color Change
3. Temperature Change