Chap 2 Flashcards

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1
Q

Matter

A

Any substance that occupies space and has mass

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2
Q

Elements

A

Unique forms of matter with specific chemical and physical properties that cannot break down into smaller substances by ordinary chemical reactions.

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3
Q

Cations

A

Positive ions that form by losing electrons

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4
Q

Anions

A

Negative ions formed by gaining electrons

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5
Q

Electron transfer

A

Movement of electrons from one element to another

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6
Q

Reactants

A

Substances used in the beginning of a chemical reaction

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7
Q

Product

A

Substances at the end of the reaction

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8
Q

Valence shell

A

Outermost electron shell

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9
Q

Molecules

A

2 or more atoms chemically bonded together

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10
Q

Isotopes

A

Different forms of the same element that have the same amount of protons but different number of neutrons. Meaning they are equal in chemical properties but differ in atomic mass.

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11
Q

Radioisotopes

A

Radioactive isotopes. Unstable chemical element that releases radiation as it breaks down and becomes more stable.

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12
Q

Balanced chemical equation

A

Each elements number of atoms is the same on each side of the equation

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13
Q

Compounds

A

Contain atoms of more than one type of element

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