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Chemistry Chapter 3
Mixtures, Properties, % composition, changes
Question | Answer |
---|---|
Two or more different kinds of particles that are not chemically joined to each other. | mixture |
Matter can be broken down into 2 catagories. What are they? | Pure Substances and Mixtures |
What is considered a pure substance? | Elements and compounds |
What are the two types of mixtures? | Heterogeneous and homogeneous |
Which type of mixtures looks like it is made of different substances visually? | Heterogeneous |
Which type of mixtures look the same, uniform throughout? | Homogeneous |
separates solids from liquids by using a porous barrier | Filtration |
What type of change is used during distillation, crystallization or chromatography? | Physical |
Element or Compound: silicon | Element |
Element or compound: sodium chloride | Compound |
Element or compound: francium | Element |
A substance that cannot be separated into simpler substances by physical or chemical means is a(n) | Element |
A chemical combination of two or more different elements is a | Compound |
Can be purified physically but requires chemical reactions to break into its components. | Compound |
A Substance that can be separated into its components through physical methods? | Mixture |
Mixture of metals | Alloy |
Properties that can be observed without changing the substance's chemical structure or composition. | Physical |
Properties observed when the substance's atoms are rearranged, broken apart or newly bonded. | Chemical |
Chemicals that join together to form a new substance. | reactants |
New chemical formed in a chemical reaction. | product |
A way of writing out what happens in a chemical reaction using the symbols that represent the substances involved. | symbol equation |
State of matter with unchanging shape or volume | Solid |
State of matter that expands to take the shape of container (volume increases) | Gas |
State of matter that takes shape of container but does not take the volume | Liquid |
State(s) of matter that flow | Gas and Liquid |
Physical Change or Chemical Change? Boiling | Physical |
Physical Change or Chemical Change? Burning | Chemical |
Physical Change or Chemical Change? Rusting | Chemical |
Physical Change or Chemical Change? Freezing | Physical |
Physical Change or Chemical Change? Ripping | Physical |
Physical Change or Chemical Change? Rusting | Chemical |
Physical Change or Chemical Change? Tarnishing | Chemical |
Physical or Chemical Property? Melting point | Physical |
Physical or Chemical Property? Density | Physical |
Physical or Chemical Property? Hardness | Physical |
Physical or Chemical Property? reacts to oxygen | Chemical |
Physical or Chemical Property? bubbles when with acid | Chemical |
Physical or Chemical Property? Turns green when exposed to air | Chemical |
Physical or Chemical Property? ability to rot | Chemical |
Physical or Chemical Property? Malleable | Physical |
Matter is neither created nor destroyed, but it can be changed from one form to another | Law of conservation of mass(matter) |
Mass of sample / total mass x 100 = ? | Percent composition |
(Result-expected result)/expected result x100=? | Percent Error |