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31 Cards in this Set

  • Front
  • Back
John Dalton, in the early 1800's proposed the ideas of that atoms are rigid spheres that (can or cannot) be broken down
cannot
What is anything that has mass and takes up space?
matter
What is the formula to find density of an object?
mass divided by volume
If a block of wood has a volume of 50 cubic centimeters and a mass of 100 grams its density is
2g/cm3
You would have the same ______ on the moon and on earth
mass
What is it about gold that makes it easy to separate it from other materials in a mixture?
high density
From these words burning, baking, rusting or mixing which one indicates a physical change?
mixing
what is in the iron ore that reacts with carbon, in a blast furnace, to separate the iron metal?
oxygen
Who was the first person propose an atomic theory?
John Dalton
What physical properties enable miners to distinguish between real gold or fools gold or pyrite?
the density
Is it true that each substance can be identified by its properties?
yes
What is the SI units for mass?
kilogram
How does copper usually exist in nature?
in a compound
What are elements composed of?
atoms
From these words: cutting, burning, boiling, and crushing, which is an example of a chemical change?
burning
Did Dalton's theory of atoms include that all atoms of a molecule are alike?
yes
What is the measurement of how matter an object contains?
mass
What substances cannot be broken chemically into other substances?
elements
What kind of energy is transformed into thermal energy in a toaster?
electrical energy
What kind of change produces one or more resources?
chemical change
What can contain as few as as a two atoms or as many as million atoms?
molecule
What is the smallest particle of a element?
atom
Is this statement true? Water is made from only one kind of atom.
no
Atoms are held together by what?
chemical bond
How can iron be obtained from a compound of iron and oxygen?
heating the compound
What is the smallest particle of a element called?
atom
How are elements combined in a compound?
in a set ratio
Why does a piece of gold sink in the water? (hint:which is more dense?)
gold is more dense
When we study chemistry, it is the study of the changes matter undergo and the ____________ of matter.
properties
What kind of energy is related to the motion or position of matter?
mechanical energy
Does an object at rest on the floor involve energy causing change?
no