a pure substance that cannot be broken down into any other substance by chemical or physical means
What is an element?
100
Made of two or more substances--elements, compounds or both--that are together in the same place but are not chemically combined
What is a mixture?
100
A mixture containing iron could be separated from the other substances by using what instrument?
What is a magnet?
100
The measurement of the amount of matter in an object
What is mass?
100
the density of water
What is one gram per cubic centimeter? (1 g/cm3)
200
the simplest substances
What are elements?
200
One way that mixtures are different from compounds
Must have ONE of the following:
What is each substance keeps its individual properties?
What is the parts of a mixture are not combined in a set ratio?
200
Sand can be separated from salt by adding this substance to the mixture
What is water?
200
The formula for finding the volume of a rectangular prism
What is length times width times height?
(V=l x w x h)
200
Tomato soup, Kool Aid, syrup and salt water are examples of these specific types of homogeneous mixtures
What are solutions?
300
the basic particle from which all elements are made--made up of protons, neutrons and electrons
What is an atom?
300
a mixture in which the parts do not combine completely or evenly.
Example: sand and water
What is a heterogeneous mixture?
300
Mixtures with large pieces can be separated from smaller pieces, such as powder, by using this instrument.
What is a sieve (sifter, colander)?
300
The formula for calculating density
What is density equals mass divided by volume?
(D=m/v)
300
Popcorn & candy, Rocky Road ice cream and Chicken Noodle soup are examples of this
What are mixtures?
400
a force of attraction between two atoms
What is a chemical bond?
400
In this type of mixture, the substances are so evenly mixed that you can't see the different parts.
Example: sugar in water
What is a homogeneous mixture?
400
Boiling salt water causes the water to turn to steam and the salt to do this
What is be left behind in the flask (pot, bowl or beaker)?
400
The mass of a material in a given volume
What is density?
400
The one doing the dissolving. Water is a universal one.
What is a solvent?
500
groups of two or more atoms held together by chemical bonds (can be the same element or can be different elements)
What are molecules?
500
Groups of molecules that are mixed in a completely even
distribution.
(A solute dissolved in a solvent)
What is a solution?
500
One way to separate pepper from a mixture of salt, pepper and iron
What is putting it in water to 'scoop' it off the top when it floats?
500
The way to find the volume of an object that is not a rectangular prism
What is the water displacement method?
500
Can see the particles with the naked eye and they will settle out over time.