Chapter 2
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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| The proposition that early in Earth's history ,simple chemical compounds in the atmosphere and ocean combined to form larger more complex substances. | Chemical Evolution
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| What number shows the amount of protons ? | Atomic Number
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| Substances that create material ? | Elements
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| what is a element with different numbers of neutrons ? | Isotopes
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| What do you get when you add the number of protons and neutrons? | Mass number
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| What is used to measure weight of an atomic structure? | Atomic mass unit
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| The outside rings of an atom | orbitals
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| The orbit of an electron around the cell nucleus. | electron shells
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| What electron can participate in chemical bonds with other structre? | valence electrons
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| measure of a number of bonds formed by an atom of a given element. | valence
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| an attraction of two atoms that allows the formation of chemical substances. | chemical bonds
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| First element on the periodic table. | Hydrogen
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| Sixth element on the periodic table. | carbon
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| sevnth element on the periodic table. | nitrogen
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| Eighth element on the periodic table. | oxygen
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| elevnth element on the periodic table. | sodium
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| twelvth element on the periodic table. | magnesium
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| fifteenth element on the periodic table. | phosphorus
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| Sixteenth element on the periodic table. | sulfur
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| seventeenth element on the perodic table. | chlorine
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| form of chemical bonding | covalent bond
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| am electrically nuetral group of two or more atoms held together by coavalent bonds. | molecules
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| when two identical non-metals equally share electrons between them. | nonpolar covalent bond
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| a chemical property that describes the tendency of an atom or a functional group to attract electrons towards itself. | electronegativity
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| a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. | ionic bonds
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| nuetral atom. | ions
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| negatively charged atom. | anions
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| positively charged atom. | cations
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| vitamin C = 2 x C3H4O3 = C6H8O6 | molecular formula
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| H H | | H - C - C - O - H | | H H | structural formula
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| a process that leads to the transformation of one set of chemical substances to another. | chemical reaction
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| a unit of measurement used in chemistry to express amounts of a chemical substance. | mole
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| The weight of a molecule is the sum of the weights of the atoms of which it is made. | molecular weight
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| a homogeneous mixture composed of only one phase. | solution
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| the number of moles of solute dissolved in one liter of solution. | molarity
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| is a liquid, solid, or gas that dissolves another solid, liquid, or gaseous solute | solvent
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| A molecule with a net dipole as a result of the opposing charges | polar (molecule)
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| Term for a substance that wont mix with water | hydrophobic
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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arieshughes
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