Matter
What are two things that something must have in order to be considered matter?
Mass and Volume
Observations or measurements that you can do without changing the identity of a substance.
Physical properties
What does it mean when you hear that "mass is conserved"?
You cannot create or destroy mass
What kind of change is it to go from something like a solid ice cube of water and melt it down into liquid water?
Physical Change
What are the 3 states of matter?
Solid, Liquid, Gas
Give an example of a mixture in the liquid state
tap water, lemonade, saltwater, etc...
The ability or inability of a substance to react with or combine with another substance is what kind of property?
Chemical Property
This physical state has definite shape and volume with very low energy.
solid
When copper oxides and turns into copper carbonate, as seen with the statue of liberty, what kind of change is this?
Chemical change
Which physical state(s) does NOT have a definite volume?
Gas
Salt water is an example of this type of mixture because it is well integrated and you cannot tell the substances apart from one another
Homogeneous mixture
Color, malleability, mass, and volume are all what kind of properties?
physical properties
A pure substance that cannot be broken down into other substances physically or chemically.
element
Draw the diagram on the board of BOTH types of chemical changes
A + B ----> AB
AB---> A + B
Which physical state has the LEAST energy?
Solid
Fruit salad is an example of this type of mixture because it is NOT well integrated and you can tell the different substances from one another.
Heterogeneous Mixture
The fact that copper has the ability to oxidize and turn into a green color is what kind of property?
Chemical property
A pure substance that is composed of 2 or more elements that have been chemically combined.
compound
Physical changes are generally reversible. But what is one example of a physical change that is NOT reversible?
Chopping wood, breaking glass, etc..
List at least 3 things that are NOT matter
Heat, energy, time, sound, etc...
Which of the three mixtures based on particle size has the SMALLEST particles?
Solutions
A piece of elemental sodium is measured on the scale to have a mass of 3.22 grams. What kind of property is this?
Physical property
In the chemical break down of Hydrogen peroxide into water and oxygen (as seen below) what is/are the products?
H2O2 ----> H2O + O2
water and oxygen or the H2O and the O2
Which type of change is irreversible? AND give an example of it.
Chemical change.
Digesting food, rotting food, etc..