Vocabulary
Matter made up of only one type of atom
element
vegetable soup
lemonade mix and water
raisin bread
tossed salad
lemonade mix and water
Shredding and Slicing are ______ changes.
Physical
Which of the following is NOT an example of matter?
air
heat
soil
water
heat
What is it called when a solid goes to a liquid?
What is it called when a liquid goes to a solid?
1. melting
2. freezing
A combination of two or more different substances.
Mixture
answers may vary
Melting butter is a _______ change.
Physical
What causes matter to change states?
Temperature
If water evaporates into the air, what property is the same after the change?
it's mass
it's state
it's temperature
it's volume
Mass
A tiny particle made up of tow or more atoms joined together.
Molecule
Give an example of a solution.
answers may vary
Which is a physical change?
combustion
corrosion
recycling
reactivity
recycling
Which of the following molecules would be an element?
O-O-O (ozone)
O-C-O (carbon dioxide)
H-O-H (water)
O-O-O (ozone)
The atomic number tells the number of...
protons
The smallest particle of matter that still acts like that kind of matter
Atom
What is the difference between a mixture and a solution?
A mixture is 2 or more substances mixed together.
A solution is 2 or more substances mixed together EVENLY.
Fireworks exploding, using batteries, and baking a cake are all examples of______ changes.
chemical
Scientists use this term to describe what happens to the mass and volume of a substance after it goes through a physical change or chemical change.
Law of Conservation of Matter
Which process would change the mass of an iron bolt?
bending
freezing
melting
rusting
rusting - when the metal combines with the air, rust forms and adds mass to the iron bolt.
A measure of how much mass is in a volume of matter.
Density
What is a substance that is separated from a solution by a chemical change (usually a solid).
Hint: think about our Fizz Quiz.
Precipitate
What is the difference between a chemical property and a chemical change?
a chemical property is a characteristic or behavior of a substance that might be observed during a chemical reaction.
a chemical reaction is a process in which the reactants are changed into one or more substances.
How do you know if 0 degrees is a melting point or a freezing point?
Whether the temperature is a melting or freezing point depends on which state the object is changing to.
A copper penny has a mass of 4 grams. A copper kettle has a mass of about 400 grams. What is true about their density? Why?
the kettle has a higher density
the penny has a higher density
they have the same density
They have the same density because they are made of the same substance.