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Section 1

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Covalent bond

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Chemistry Science

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6 years ago

Date created

Mar 1, 2020

Cards (16)

Section 1

(16 cards)

Covalent bond

Front

A chemical bond that involves sharing a pair of electrons between atoms in a molecule

Back

Dots represent

Front

unpaired electrons

Back

Subscripts tell us the number of ___________ for each formula.

Front

number of each element

Back

mass spectrometry

Front

a technique that separates particles according to their mass. deflection is inversely proportional to mass-to-charge ratio (m/z).

Back

bold wedges indicate

Front

the atom is sitting in front of the plane of the screen

Back

law of constant composition

Front

A given compound always contains elements in exactly the same proportion by mass

Back

Law of Conservation of Mass

Front

Matter is not created nor destroyed in any chemical or physical change

Back

Difference between ionic bond and covalent bond:

Front

ionic: lose/gain electrons, smallest unit is a formula unit, composed of metals & nonmetals, stronger covalent: sharing electrons, molecule is the smallest unit, composed of only nonmetals

Back

electrostatic attraction

Front

the attraction between positive and negative charges

Back

When a neutral atom gain electron(s):

Front

-ide ending

Back

ionic bond

Front

Formed when one or more electrons are transferred from one atom to another (results in a net charge)

Back

Dalton's Atomic Theory

Front

1) elements are composed of atoms. 2) atoms of same element are identical in mass and properties, but differ from other elements atoms 3) elements can mix together to form compounds 4) a chemical reaction is a rearrangement of atoms

Back

anion

Front

A negatively charged ion

Back

dashed lines indicate

Front

the atom is sitting behind the plane of the screen

Back

cation

Front

A positively charged ion

Back

Atomic mass

Front

(relative abundance x atomic weight) + (relative abundance x atomic weight)...

Back