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Introduction to Atoms Flashcards | StudBud
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Introduction to Atoms
Introduction to Atoms
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Introduction to atoms, periodic table information and Bohr diagrams.
Flashcards
28 cards
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Questions
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Answers
1
The majority of elements on the periodic table are:
Metals
Metalloids
Non-metals
Semi-metals
2
Negatively charged particles found in an atom.
Proton
Electron Cloud
Neutron
Electron
3
The term that represents the number of protons in the atom.
atomic number
atomic mass
mass number
4
The sum of protons and neutrons in the atom.
atomic number
mass number
5
What are covalent bonds?
Bonds between two molecules sharing electrons
Bonds between separate atoms sharing electrons
Bonds between two organelles
Bonds between two charged particles
6
Which of the following has an amu of approximately 0.
electron
neutron
both red and yellow
proton
7
The dense, positively charged region at the center of the atom.
Electron
Neutron
Proton
Nucleus
8
He proposed that all atoms are small, hard “uncuttable” particles.
Dalton
Democritus
Aristotle
Thomson
9
Atoms are neutral because the proton number equals the number of _________.
neutrons
atomic number
electrons
nucleus mass
10
An atom that has gained or lost electrons is known as a(n) ________.
neutron
ion
isotope
amu
11
Elements are in the same group because they share....
Properties
Atomic Masses
Atomic Numbers
protons
12
True or False: Covalent bonds are between nonmetals only.
False
True
13
He explained electrons do not follow in definite paths & that the path cannot be predicted.
Bohr
Rutherford
Schrodinger & Heisenberg
Dalton
14
The rows on the periodic table.
alleys
columns
periods
15
Boron has an atomic number of 5 and a mass number of 11, how many protons does it have?
5
6
11
16
16
How many valence electrons would you expect an element in Group 15 to have?
15
3
5
It depends on the row that it is in.
17
This represents the atom as mostly positively charged material with some negative particles.
Gold Foil Experiment
Plum Pudding Model
18
Which of the following are found in the nucleus of the atom.
protons and electrons
protons
protons and neutrons
electrons and neutrons
19
The following Bohr diagram represents which atom?
helium
hydrogen
carbon
aluminum
20
To calculate the number of neutrons, subtract the atomic ________ from the _______ number.
protons, neutrons
number, mass
mass, number
21
The SI unit used to express the mass of particles in atoms.
atomic number
mass number
weight
atomic mass unit (amu)
22
He stated that elements combine in specific proportions.
Thomson
Democritus
Dalton
Bohr
23
Which of the following has approximately 1 amu.
electrons
protons
both red and blue
neutrons
24
The center of an atom is a tiny, positively charged region containing most of the atom’s mass.
Dalton
Bohr
Rutherford
Thomson
25
If helium has an atomic number of 2 and an atomic mass of 4, how many neutrons does it contain?
6
2
4
26
Ionic Bonds are bonds between:
Metal and Metal
Metal and Non-Metal
Non-Metal and Non-Metal
27
The columns of the periodic table are called
Periods
Families/Groups
Isotopes
Clans
28
Which are the valence electrons?
Electrons found in the first
Electrons in a shell
Electrons found in the outer most shell
Electrons found in the second shell
