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44 Cards in this Set
- Front
- Back
Is vegetable soup a pure substance or mixture? If pure substance classify as element or compound, if mixture classify as homogeneous or heterogeneous.
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Heterogeneous Mixture
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Is Glucose, C6H12O6 a pure substance or mixture? If pure substance classify as element or compound, if mixture classify as homogeneous or heterogeneous.
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compound pure substance
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Is aluminum a pure substance or mixture? If pure substance classify as element or compound, if mixture classify as homogeneous or heterogeneous.
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pure substance, Element
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Physical or chemical change?
A silver bowl tarnishes over time. |
Chemical
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Physical or chemical change?
Wood burns in a stove. |
Chemical
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Physical or chemical change?
Alcohol evaporates quickly. |
Physical
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Element or Compound? a single atom or a molecule?
C60 |
Element, molecule
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PCl3
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Compound, Molecule
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He
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Element, Atom
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Ti
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Titanium
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Cu
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Copper
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Sr
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Strontium
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Na
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Sodium
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Cs
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Cesium
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Ne
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Neon
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W
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Tungsten
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Si
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Silicon
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Cl
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Chlorine
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Mn
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Manganese
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P
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Phosphorus
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Au
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Gold
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How many sig figs?
600 kg |
1
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How many sig figs?
2.060 cm |
4
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How many sig figs?
0.0056 L |
2
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How many sig figs?
5 pencils |
infinite number of sig figs
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18.5g + 556.09g + 2.654g = 577.244g
answer with correct sig figs. |
577.2 g
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5.2cm x 3.6cm = 18.72cm2
answer with correct sig figs |
19 cm2
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Giga
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prefix symbol- G
Prefix value- 10^9 |
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Kilo
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prefix symbol- k
prefix value- 10^3 |
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centi
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prefix symbol- c
prefix value- 10^-2 |
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nano
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prefix symbol- n
prefix value- 10^-9 |
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milli
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prefix symbol- m
prefix value- 10^-3 |
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mega
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prefix symbol- M
prefix value- 10^6 |
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micro
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prefix symbol- u
prefix value- 10^-6 |
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proton # =
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atomic #
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neutron # =
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mass # - proton #
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Molecular weight
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is the sum of atomic weights of all atoms in a molecule
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Formula weight
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is the sum of atomic weights of all atoms in a formula unit of a compound
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When two atoms of the same element combine, they form a compound.
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False
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both a law and theory have been rigorously tested. the critical difference between the two is that when a theory is proven, it becomes a law.
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False
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a negative ion is termed an anion and is formed when nonmetals gain electrons.
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True
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in a neutral atom, the number of protons equals the number neutrons.
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False
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Molecular compounds form between a metal and a non metal.
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false
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A scientific theory explains the underlying basis for why scientific laws works.
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True
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