Chemistry

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What is a covalent bond?
A strong bond between two atoms in which each atom shares one or more elctrons with the other.
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What is an allotrope?
A structurally different form of an element with different physical properties.
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What is a covalent compound?
A compound containing atoms joined by covalent bonds.
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What is a double bond?
Two shared pairs of electrons(our electrons)between two atoms.
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What is a giant structure?
A structure containing millions of atoms or ions bonded together. The structure extends in three dimensions untill all avaliable avaliable atoms are used up.
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What is a molecule?
A small group of atoms which are held together by covalent bonds.
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What is a single bond?
A shared pair of electrons between two atoms.
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What is conservation of mass?
It is where the materials you start with will weigh the same at the end of the experimant eg. Salt into a solution then the water being evaporated.
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Wht is chromotrography?
A process used to seperate mixtures of soluble substances.
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What is a chromotogram?
The results of chromotography.
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What is gas chromotography?
A type of chromotography that uses an inert gas as the mobile phase.
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What does inert mean?
An unreactive substance.
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What is a mass spectrometer?
A device that can be used to analyse the results of gas chromotography.
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What is matrix?
A continuous solid stationary phase.
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What is a mobile phase?
The substance that carries the test chemicals in choromotography.
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What is a performance-enhancing drug?
Any drug that could potentially improve the performance of usually
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What is the earths atmosphere made up of?
78% Nitrogen|21% Oxygen| 0.93% Argon|0.038% Carbon Dioxide
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What is an atom?
the smallest particle of a chemical element that can exist.
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What is an element?
A substance made up of only one type of atom.An element can not be chemically broken into any simpler substance.
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What is a compound?
A substance made when two or more compounds are chemically bonded together.
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What is: a.the chemical name for limestone and b.what does it react with?
a.calcium carbonate b. acid
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Other cards in this set

Card 2

Front

What is an allotrope?

Back

A structurally different form of an element with different physical properties.

Card 3

Front

What is a covalent compound?

Back

Preview of the front of card 3

Card 4

Front

What is a double bond?

Back

Preview of the front of card 4

Card 5

Front

What is a giant structure?

Back

Preview of the front of card 5
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