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Atomic Structure Flashcards | StudBud
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Atomic Structure
Atomic Structure
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1
What is the atomic mass?
The number of protons and neutrons in the nucleus of an atom.
An abbreviation ofthe element name.
2
What is the atomic mass of Copper?
72.64
114.82
63.546
106.42
3
How do you know the number of protons?
It is the atomic mass
it is the atomic number
atomic mass (estimated) + atomic number
4
Metal Characteristics
soft, foam
shiny, lustrous, malleable, and hard
light, plastic
5
What is an ion?
Elements that has the same number of protons but different neutrons
An atom whose number of electrons does not equal its number of protons
6
How many protons are in Chlorine
2
5
12
17
7
How many neutrons are in nickel
43
22
64
31
8
What is the order of nonmetals, metals, and metalloids from left to right?
nonmetals, metals, metalloids
metals, metalloids, nonmetals
metalloids, nonmetals, metals
metals, nonmetals, and metalloids
9
How many protons does Copper have?
20
47
29
13
10
What is a Nucleus?
Uncharged particle found in an atom’s nucleus.
The central part of an atom that’s composed of protons and neutrons.
11
What is an Atom?
Anything that takes up space and has mass.
The smallest unit of an element
12
What is matter?
Particles that make up an atom like protons and neutrons and electrons.
Anything that takes up space and has mass
13
Group
the columns organizing the elements
the rows organizing the elements
14
What is the atomic number?
The # of protons in the nucleus and # of electrons orbiting the nucleus
A property of a substance that can be observed without changing identity
15
How do you calculate the number of neutrons?
Atomic mass - atomic number
Atomic mass (estimated) + atomic number
Atomic mass (estimated) - atomic number
16
how many groups are there
8
12
4
7
17
What is a proton?
A subatomic particle with a positive charge
Negatively charged particle found in shells surrounding the nucleus.
18
What is the number of electrons?
it is the same as protons
it is the atomic mass (estimated)
it is the atomic mass
19
What is the periodic table?
The number of protonsfound in the nucleus ofan atom
Chart that organizes the elements by chemical properties
20
Who is Dmitri Mendeleev?
he discovered the most recent element on the periodic table
he discovered laws of physics
he discovered atoms
he made the periodic table
21
Characteristics of nonmetals
soft, brittle, dull
dense, hard, sharp
22
Period
The horizontal rows organizing the elements
the verticle columns organizing the elements
23
how many periods are there
18
10
14
8
24
What is an electron?
Negatively charged subatomic particle orbiting the nucleus.
a subatomic particle with no charge
25
What is an element
Particles that make up an atom
a substance made of a single atom that can't be broken into chem/phys means
