| Atoms | Atomic Models | Mixtures | Changes in Matter | Potluck |
|---|---|---|---|---|
100What is an electron?
Negatively charged particle found outside of the nucleus.
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100Who is JJ Thomson?
This scientist discovered the electron.
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100What is a solution?
A homogeneous mixture in which something is dissolved in something else.
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100What is 0 degrees Celsius?
The melting and freezing point of water.
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100What is an ion?
A charged atom is called this.
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200What is the number of electrons?
The overall charge of an atom is neutral because the number of protons always equals the number of these.
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200What is the Dalton model?
The first atomic model.
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200What is a heterogeneous mixture.
A mixture where the different parts can be seen and easily separated.
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200What is evaporation?
The type of vaporization that occurs at the surface of a liquid?
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200What is a chemical change?
A change in matter that produces one or more new substances.
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300What is a proton?
This particle has a positive charge and is found inside of the nucleus.
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300Who is Rutherford?
This scientist discovered the nucleus.
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300What is the solute?
The substance being dissolved.
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300What is condensation?
The change of state from gas to a liquid.
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300What is combustion?
The rapid combination of a fuel with oxgen that produces heat, light, and other new substances.
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400What is the proton?
This particle determines the identity of an element.
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400What is the Electron Cloud Model?
The Present-Day model is aka...
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400What is an alloy?
A mixture oftwo or more elements, one of which is a metal.
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400What is sublimation?
The change in state from a solid directly to a gas.
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400What is the law of conservation of mass?
States that matter is not created or destroyed in any chemical or physical change.
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500What is the number of neutrons?
The number of these can be calculated by subtracting the atomic number from the atomic mass.
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500What is the Bohr Model?
This model shows the electrons moving in specific layers, or shells, around the nucleus.
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500What is the solvent?
Imagine sugar that is completely dissolved in water. The water in this example can be called this.
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500What is it remains constant?
During an actual change of state, the temperature of water does this.
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500What is an amorphous solid?
A solid that does not melt at a distinct temperature and whose particles are not arranged in a regular pattern.
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