Chemistry Beginner Level
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Matter | Anything that takes up Space
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| Not Matter | Energy, Sound, Emotions, Light, Radiation, Time.
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| Element | Pure substances made of atoms only that substance.
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| Atom | Smallest particle of an element that still has the properties of the element.
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| Compound | More than one element bond together, always has a definite composition by weight, some evidence of a chemical action is present, original parts lose their identity and can only be separated by chemical means
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| Mixture | Separate substances, parts may be present in any proportion, there is no evidence of any chemical action taking place,they do not lose their identity can be separated by chemical means.
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| Homogenous Mixture | Hard to see or separate parts. Has a variable composition
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| Heterogenous Mixture | Easy to see and easy to separate parts. Has a variable composition.
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| Composition Definite Composition | The action of putting things together. A very specific compound.
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| Solution | A homogenous mixture of two or more substances, uniformly mixed through-out a single phase.
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| Solvent | The substance that does the dissolving.
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| Solute | The substance that is dissolved.
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| Suspension | A heterogenous mixture that seperates into layers over time.
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| Endothermic | Heat coming in.
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| Exothermic | Heat going out.
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| Isotope | Change in the number of neutrons.
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| Democritus | Thought the atom was like a stone that could be cut till no more.
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| Dalton | Thought the atom was like a pellet or billiard ball that combines to form compounds.
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| Thomson | Thought the atom was like a cookie and the chips are the electrons.
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| Rutherford | Discovered the nucleus where positive charges were and electrons swirled around the nucleus.
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| Bohr | Thought the atom was like a solar system where electrons exist in energy levels around the nucleus and electrons jump up and down.
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| Schrodinger | Thought the atom was like a cloud where particles are like waves and that you can't pinpoint where they are.
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| Proton | Has a positive charge, has mass, lives in the nucleus.
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| Neutrons | Has no charge, has mass, lives in the nucleus.
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| Electrons | Negatively charged particles that orbit the the nucleus. It's symbol looks lie e-, they are in various energy levels, 1/1836 of a proton, and they don't affect the mass.
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| Atomic Number | Number of protons in an atom.
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| Atomic Mass | Number of protons plus the number of neutrons.
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| Solid | Has a definite shape and a definite volume ( can't compress into a jar)
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| Liquid | No definite shape ( takes form of the jar), no definite volume ( can't compress into a jar)
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| Gas | No definite shape( takes form of container), no definite volume ( can compress)
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| Physical Properties | Can be observed without changing a substance into another substance. Changes of state occur when heat energy is released or absorbed.
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| Sublimation | Solid to gas.
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| Deposition | Gas to solid.
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| Melting | Solid to liquid.
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| Freezing | Liquid to solid.
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| Evaporation | Liquid to gas
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| Condensation | Gas to liquid.
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| Chemical Properties | Can be observed when matter undergoes a change in chemical composition.
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| Elements in the Atmosphere | 78.3% Nitrogen, 21% Oxygen.
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| Elements in the Human Body | 6.3% Hydrogen, 25.5% Oxygen, 9.5% carbon, 1.4% Nitrogen.
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| Radioactivity | An element can transform/decay or breakdown (because it's unstable) into a different isotope or to an entirely different element.
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| Radiation | Released energy and matter. It emits one or more particles or electromagnetic energy, it does this because it's neutrons in the nucleus is too big.
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| Alpha Decay | Fishy looking symbol. Alpha particles( 2 neutrons and 2 protons )
Similar to He without electrons.
Positively charged particles.
Massive.
Passes through paper.
Picks up electrons or ionize matter as they pass through.
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| Beta Decay | Slanted B looking symbol. (electrons)
Has a negative charge.
Neutrons decay to form a proton and an electron, which is ejected at high speed.
Ionize Matter.
Stopped with 3 mm of Al or 10 mm of wood.
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| Gamma Decay | Curvy Y looking symbol.
Rays of electromagnetic energy.
No charge.
(Not Matter)
Photons
Ionize matter.
Stopped with 60 mm of Al, 7 m of Pb or thick concrete.
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| Fission | Splitting the atom.
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| Fusion | Joining of the atom.
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| Half Life | Time it takes for half of the sample to decay.
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Created by:
Skyferris
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