What vocabulary term is being described: Unique characteristic that helps identify a substance.
When calculating _____ you are determining the mass in a set volume of a substance.
_________ is when on substance is able to dissolve in another.
A ____ is made of 2 or more substances that DO NOT chemically combine.
Something is considered a ________ when it is made of one type of material all the way through. An example could be water, chalk, vinegar, or copper.
If you heat 1 tablespoon and 1 stick of butter, the amount of butter is different, but the ______________, or the temperature at which both samples of butter will begin to change to a liquid will remain the same.
Ice can change from a solid (ice) to liquid (water) to gas (water vapor). What vocabulary term does this describe?
According to scientific principle #6 properties (denstiy, hardness, melting point, solubility) of a substance will:
change because it isn't possible to stay the same if the amount changes
stay the same ONLY if the amount of the substance is the same
stay the same, even if the amount of the substance is different
change based on the amount of the substance present
Scientific principle #6 states: properties of a given substance are the same regardless of the amount of the substance. Based on this scientific principle, which options below will not change if the amount of a substance is increased?
melting point of the substance
volume of the substance
mass of the substance
density of the object
solubility of the substance
A phase change IS NOT a chemical reaction. Choose the options that support this claim. You may choose more than one.
The substance are mixed together and keep their properties
The atoms making up the molecules are rearranged creating new substances
The atoms and molecules are mixed together BUT do not create new molecules
The atoms are rearranged creating a new product with a different arrangement of atoms
When a substance goes through a phase change ___.
molecules are rearranged in some of the substances
molecules rearrange making new substances
a chemical reaction occurs
the atoms making up molecules are not rearranged
When 2 or more substances are mixed together and the resulting substances properties HAVE NOT changed a chemical reaction has occurred.
Mixing kool-aid powder and water together makes a new substance.
How can we determine if 2 unknown substances are the same or different substance?
observe the size of each substance
observe the shape of the substances
test properties of the substances
make a hypothesis, educated guess
Which letter represents particles in solid form?