scieance quiz Flashcards

1
Q

why study science

A

to understand the universes around us.

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2
Q

Atom

A

smallest substance with traits

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3
Q

what makes up the nucules

A

protons and neutrons

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4
Q

what is the nucleus

A

the center of an atom

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5
Q

whats the mass number

A

the total amount of protons and neutrons in the nuclues

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6
Q

periodic table

A

a chart where all elements are organized into groups and periods according to their properties

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7
Q

neutron

A

an atom with an neutral charge

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8
Q

chemical code

A

one or two letters that stand for an element

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9
Q

electron cloud

A

In the electron cloud model of an atom, region around the nucleus where an electron may be found.

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10
Q

electron

A

negatively charged atom found outside of the nucleolus

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11
Q

mass

A

the amount of matter in something weighed in grams

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12
Q

atomic number

A

Number of protons in the nucleus of one atom of an element.

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13
Q

physical properties

A

Property of matter that can be observed without changing the composition or identity of the matter.

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14
Q

law of conversation of mass

A

matter can not be created nor destroyed it can only be made into something new

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15
Q

matter

A

the substance or materiel all objects are made up of.

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16
Q

proton

A

a positively charged atom found in the nucleus

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17
Q

who created the periodic table????????

A

Mendeleev

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18
Q

what determines the atomic number

A

neutrons

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19
Q

the number of atoms in an element

A

atomic number

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20
Q

Cl

A

chlorine

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21
Q

the sum of the number of protons and neutrons in an atom

A

mass number

22
Q

C

23
Q

H

24
Q

how many neutrons does einsteinium have

25
how many protons does Molybdenum have
42
26
Fe
iron
27
how many electrons does silcon have
14
28
how many protons does neon have
10
29
a substance that is only made up of one atom is called an
element
30
atomic mas for iron
56
31
compound
2 or more atoms chemically combined
32
air is a
mixture
33
mixture
Two or more substances which are physically combined and can be separated by physical means.
34
what is water
a compound
35
electrons are found orbiting in
in cloud regions
36
is carbon has a #6 and proton 5 and electron six what is the neutron
SIX duh
37
whats it called when your smaller than an atom
subatomic
38
an element is an atom with
specific traits
39
there is ------- elements found naturally on earth
92
40
elements in the same family share
simile traits
41
elements in the same family share the same amount
of electrons int he outer orbit
42
the electrons in the outer orbit do all the
bonding (combining) with other elements.
43
the top period has 1 orbit
row 2 had 2 orbits
44
there are around________elements only around______are in your body
120 & 40
45
95% of our bodies are
H,N,O,P and caluium
46
___ make up most of the matter in our universe
18
47
matter is really rare in outer space but
not on earth
48
elemets in the same period share the same
electron locations
49
as you move down the rows each row adds an orbital
50
periodic means
a predictable pattern