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Anatomy and physiology 1-14 > Chapter 2 > Flashcards

Chapter 2 Flashcards

1
Q

Atoms

A

Tiny particles that compose elements

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2
Q

Elements

A

Fundamental substances that compose matter

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3
Q

Molecule

A

When 2 or more atoms Bond

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4
Q

Ions

A

Atoms that gain or lose electrons

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5
Q

What an atom consists of ?

A

Protons - positive electrical charge
Neutrons - neutral charge - uncharged
Electrons -negative electrical charge

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6
Q

An atoms mass

A

Determined by number of protons and neutrons in its nucleus

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7
Q

Atomic number

A

Number of protons in an atom

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8
Q

Atomic weight

A

Number of protons and neutrons in its nucleus

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9
Q

When an elements atom have nuclei containing some number of protons but different neutrons (may or may not be radioactive )

A

Isotope

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10
Q

Molecules

A

Any chemical structure that consists of atoms held together by covalent bonds (involving the sharing of electrons between atoms )

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11
Q

Compound molecule

A

When 2 or more atoms of a different kind bond they form a compound molecule

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12
Q

3 types of mixtures

A

Colloids
Solutions
Suspensions

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13
Q

Matter

A

Liquids gases and solids both inside and outside the human body takes up space and weight

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14
Q

Colloids

A

Also called emulsion
Heterogenous
Milky /translucent
Sol gel transformation

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15
Q

Solutions

A

Homogenous mixture

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16
Q

Solute

A

Present in solution smallest amount

17
Q

Solvent

A

Present in solution largest amount

18
Q

Suspension

A

Heterogenous mixture

In the body they do not settle due to blood circulation

19
Q

Ionic bonds

A

They form between ions

20
Q

Electron acceptor

A

Atom gaining 1 or more electron

21
Q

Ions that require a net positive change

A

Cations

22
Q

Ions that require a net negative charge

A

Anions

23
Q

3 types of chemical bonds

A

Ionic
Covalent
Hydrogen

24
Q

Involves the sharing of electrons between atoms

A

Covalent

25
Q

When positive hydrogen end of a polar molecule is attracted to negative nitrogen or oxygen end of another polar molecule -attraction is called ?.

A

Hydrogen bond

Anatomy and physiology 1-14 (5 decks)

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