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Stack #4725361

QuestionAnswer
Proton positive charge; found in the nucleus
Neutron no charge; found in the nucleus
Electron –negative charge; found in the outer rings (orbits)
Elements An is a pure chemical substance consisting of a one type of atom.
Compound A is a pure substance consisting of two or more different elements chemically combined.
4 divisions of elements Metals, Non metals Metalloids Noble gases
Non Metals are NOT able to conduct electricity or heat, brittle. Right hand side of periodic Table
Metalloids a chemical element with properties “in between”, or that are a mixture of, metals and nonmetals. Staircase in periodic table
Metals a material that is typically hard, shiny, and is a good conductor of heat and electricity.
Chemistry is the study of the composition, structure, properties and change of matter.
Atom The basic unit of matter
Mixtures When 2 or more elements are not chemically combined they are physically combined
Physical Properties observed/measured Color Odor,Phase,Shape, Heat & electrical conductivity,Boiling, freezing points, Texture
Chemical Properties •how a substance changes into a new substance Flammability: ability to burn •2. Reactivity: ability to combine •3. Rusting: (Iron + water iron oxide) •4. Corrosion: metal chemically reacts with substance
Physical change Keeps chemical composition and properties Does not produce a new substance
Chemical Change Chemical reaction •Form new substances with DIFFERENT properties.
Solution Best mixed and small and dissolved particles
Solute Substance is dissolved
Solvent Substance that does the dissolving
Sumblimation A change in state directly solid to gas without being a liquid first.
Deposition The change in state directly into gas to a solid state
Freezing a change in state that occurs when the temperature of particles has decreased energy and a liquid turns into a solid
Melting a change in state that occurs when particles speed up and change from a solid to a liquid
Boiling a rapid change in state that occurs throughout a substance changing it from a liquid to a gas
Condensation the reverse of evaporation when a substance changes from a gas to a liquid state
Created by: Jordan2ww
 

 



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