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15 Cards in this Set
- Front
- Back
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John Dalton's ideas of atoms are...
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1.In any element,all atoms are exactly alike.
2. atoms of different elements are different. 3. Atoms can't be broken into smaller pieces 4. Atoms of each element have a unique mass 5. Atoms of two or more elements can combine to form compounds 6. Masses of elements in a compound are always in a constant. |
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Elements are made up of tiny particles called_____________.
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atoms
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Discuss what is a formula.
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A combination of symbols that show the ratio of elements in a compound.
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Discuss how a Mixture is different from a compound.
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Mixture is two or more elements or compounds or both combined but not chemically and a compound is two or more elements chemically combined to form a new substance.
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Explain the difference between physical change and chemical changes.
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Physical-- alters form or appearance of matter but doesn't form a new substance. Chemical changes matter into an entirely new substance.
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What is the international system of units uses what unit of measurement for mass?
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grams or kilograms
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What is the international system of units uses what unit of measurement for volume?
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cubic centimeters
cm |
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What is the international system of units uses what unit of measurement for density?
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grams per cubic centimeter
g/cm |
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What is the formula for volume?
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length x width x height= volume
l x w x h |
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What is the formula for density?
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Density = mass per volume
D=m/v |
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The force that holds two or more atoms together is called a _______________.
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chemical bond
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A combination of two or more atoms that are bonded together is called a _________________.
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Molecule
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A substance made up of two or more elements chemically combined in a specific ratio.
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What is a compound?
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Discuss the meaning of an element.
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Simplest form that cannot be broken down.
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Name the 3 kinds of matter.
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Elements
Compounds Mixtures |
