gain electrons and become negative

Identify the models in the picture.

The top model is Thompson & the bottom is Rutherford

What causes the color of the flames?

Electrons returning to the ground state

What did the Gold Foil experiment conclude about the structure of the atom?

Most of the atom is empty space.

What was not correct in Dalton's Atomic Theory?

Atoms of the same element are not always identical.

What was not correct in Dalton's Atomic Theory?

Atoms can be subdivided into subatomic particles.

neutral and the # of protons equals the # of electrons

Which of the following is true of Period 3 elements as one goes left to right across the table?

Radius gets smaller and # of energy levels stays same.

lose electrons and become positive ions

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Atomic Structure and Periodic Table

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Questions 24

Answers

1
Nonmetals tend to
gain electrons and become positive
gain electrons and become negative
lose electrons and become positive
lose electrons and become negative
2
Whose model is called the Solid Sphere Model?
Rutherford
Bohr
Thomson
Dalton
3
Which two subatomic particles make up most of the mass of an atom?
beta particles and electrons
electrons and neutrons
neutrons and protons
electrons and protons
4
Identify the models in the picture.
The top model is Dalton & the bottom is Rutherford
The top model is Thompson & the bottom is Rutherford
The top model is Rutherford & the bottom is Thompson
The top model is Rutherford & the bottom is Dalton
5
What element could this be?
chlorine
manganese
argon
sodium
6
Which of the following is an isotope of carbon-14?
6 protons, 6 neutrons
14 protons, 6 neutrons
8 protons, 6 neutrons
6 protons, 8 neutrons
7
What causes the color of the flames?
Protons returning to the ground state
Protons jumping to higher energy levels
Electrons jumping to higher energy levels and staying there
Electrons returning to the ground state
8
How many valence electrons are in an atom with the electron configuration of 2-8-3?
8
2
13
3
9
What part of the atom is responsible for reactivity of atoms?
protons
inner shell electrons
valence electrons
nucleus
10
Identify the element with 5 valence electrons and 4 energy levels.
Sb
As
Ge
V
11
Who discovered electrons?
Rutherford
Thomson
Dalton
Bohr
12
What did the Gold Foil experiment conclude about the structure of the atom?
Most of the atom is empty space.
The nucleus is negative.
Most of the nucleus is empty space.
Electrons are in the nucleus.
13
What was not correct in Dalton's Atomic Theory?
Atoms do not combine in chemical reactions.
Atoms do not exist.
Atoms of the same element are not always identical.
Atoms do not form compounds in a definite ratio.
14
What was not correct in Dalton's Atomic Theory?
Atoms do not form compounds in a definite ratio.
Atoms do not combine in chemical reactions.
Atoms of the same element are always identical.
Atoms can be subdivided into subatomic particles.
15
Atoms are
neutral because the # of protons equals the # of neutrons
neutral because the # of neutrons equals the # of electrons
neutral and the # of protons equals the # of electrons
positive because there are more protons than electrons
16
Which element has the largest atomic radius?
Rb
Li
K
Na
17
Identify two atoms most similar to sodium.
H and Mg
K and Rb
Mg and Ca
Ne and Be
18
Which element in in group 13 period 2?
Be
Mg
Al
B
19
Which of the following is true of Period 3 elements as one goes left to right across the table?
Radius gets smaller and # of energy levels decreases.
Radius gets smaller and # of energy levels stays same.
Radius gets smaller and # of energy levels increases
Radius gets larger and # of energy levels increases
20
Metals tend to
lose electrons and become positive ions
lose electrons and become negative ions
gain electrons and become negative ions
gain electrons and become positive ions
21
What is the atomic number of bromine-80?
45
35
5
80
22
Which element is the most nonmetallic?
He
H
Fr
F
23
Which atom has 20 protons, 20 electrons, 22 neutrons?
neon-20
calcium-42
calcium-40
neon-22
24
A cation is a(n)
negative ion
positive ion
isotope of an atom
neutral ion

Atomic Structure and Periodic Table Flashcards | StudBud