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Science > Chemistry 2018 > Flashcards

Chemistry 2018 Flashcards

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1
Q

matter

A

Anything that is made up of atoms

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2
Q

atoms

A

the building blocks of matter

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3
Q

proton

A

an atomic particle in the nucleus that has a positive charge

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4
Q

electron

A

an atomic particle that orbits the nucleus

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5
Q

atomic particles

A

particles that make up an atom

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6
Q

nucleus

A

the centre of an atom

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7
Q

neutron

A

an atomic particle found in the nucleus that has a neutral charge

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8
Q

AMU

A

atomic mass unit

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9
Q

electron shell

A

where the electrons orbit the nucleus

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10
Q

element

A

a substance made of one type of atom

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11
Q

compound

A

a substance made of more than one type of atom

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12
Q

periodic table

A

a table of elements

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13
Q

atomic number

A

how many protons and electrons an atom has

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14
Q

atomic mass

A

the mass of an atom

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15
Q

alchemist

A

a person who transforms or creates something through a seemingly magical process

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16
Q

investigation

A

a formal inquiry or systematic study

17
Q

observation

A

the ability to notice things, especially significant details

18
Q

scientist

A

a person who is studying or has expert knowledge of one or more of the natural or physical sciences

19
Q

atom

A

the smallest particle of a chemical element that can exist

20
Q

ion

A

an atom that has a charge that is not neutral

21
Q

cation

A

an ion that has a +ve charge

22
Q

anion

A

an ion that has a -ve charge

23
Q

valence shell

A

the outermost shell of an atom

24
Q

valence electrons

A

electrons in the outermost shell of an atom

25
Q

noble gases

A

the least reactive elements on the periodic table (the most stable elements)

26
Q

Radioactive

A

emits energy in the form of waves or subatomic particles

27
Q

Isotope

A

an atom that has a different no. of neutrons than its form o the periodic table

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