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Atoms & the Periodic Table
Atoms & the Periodic Table
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#science#8thgrade#unit5#2018#review
Flashcards
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Questions
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Answers
1
In general, covalent compounds have ______ boiling points
Medium
High
Low
2
True or False: elements are arranged in order of increasing atomic numbers
False
True
3
Atoms that have different numbers of neutrons are called
isotopes
ions
cations
anions
4
In 1808, a British chemist was the first to publishe an atomic theory. Who was he?
Ernest Rutherford
John Dalton
JJ Thompson
Max Planck
5
True or False: Metals are good electrical conductors and are malleable and ductile
False
True
6
What information is contained in each square on the periodic table?
Mass number, atomic weight, atomic symbol, and element name
Proton #, Atomic weight, Element name and Oxidation states
Proton #, atomic symbol, and element name
Atomic number, Atomic symbol, Element name, and Mass number
7
This bond forms between metal atoms when their outermost energy levels overlap
Metallic bond
Hydrogen bond
Ionic bond
Covalent bond
8
The group of elements highlighted in red are called
Metals
Metalliods
Nonmetals
Lanthanides
9
How many groups are on the periodic table?
18
7
17
8
10
A group of atoms held together by chemical bonds
Molecule
Elements
Compound
Atoms
11
Which instrument do we use to look at atoms?
Electron Microscope
Light Microscope
Compound Microscope
Magnifying Glass
12
Who is associated with the "Plum Pudding" model?
JJ Thompson
John Dalton
Ernest Rutherford
James Chadwick
13
What is the chemical symbol for Potassium?
K
P
Pm
Po
14
What is the chemical symbol for Mercury?
Hg
Hf
Mc
M
15
What are valence electrons?
electrons found in the outermost energy level
electrons found in around the nucleus
electrons found in the second energy level
electrons found in the innermost energy level
16
Who discovered the electrons?
John Dalton
Ernest Rutherford
JJ Thompson
James Chadwick
17
Ernest Rutherford conducted an experiment to study the parts of the atom. What did he discover?
found particles within the atom that have a negative charge
electrons move within an area around the nucleus (e- cloud)
the nucleus contians uncharged particles called neutrons
atoms have a nucleus with a positive charge surrounded by e-
18
In a neutral atom, the number of electrons equals the number of what other part?
Nuclei
Protons
Energy levels
Neutrons
19
This bond forms when atoms SHARE electrons
Ionic Bond
Covalent Bond
Metallic Bond
Hydrogen Bond
20
What must happen for an ion to form?
An atom must gain or lose a proton
An atom must gain or lose a neutron
An atom must gain or lose an electron
An atom must gain or lose a nucleus
21
Who discovered the neutrons?
James Chadwick
Ernest Rutherford
JJ Thompson
John Dalton
22
O
2
is a ...
molecule
atom
element
compound
23
An interaction that holds atoms or ions together
Chemical reaction
Chemical bond
Ionic Bonding
Chemical attraction
24
How many periods are on the periodic table?
17
18
8
7
25
Who was the first to organize elements in the periodic table?
Gregor Mendeleev
Dmitri Mendeleev
Henry Moseley
Gregor Mendel
26
The energy level furthest from the nucleus is called
innermost energy level
f orbital energy level
outermost energy level
Last energy level
27
Why do atoms form bonds?
the reasons are unknown
because atoms tend to gain electrons
because they are attracted
they have less than 8 valence e- on their outermost level
28
True or False: atoms always have equal numbers of protons and neutrons
True
False
29
These particles are positively charged. What are they?
Quarks
Neutrons
Electrons
Protons
30
Which Greek philosopher thought that you'd eventually end up with a particle that cant be cut?
Socrates
Pluto
Aristotle
Democritus
31
What is an ion?
A molecule
A particle with a positive charge or a negative charge
An atom with a different number of protons
An atom with a different number of neutrons than protons
32
Bohr suggested that e- move around the nucleus in circular paths. When did he publish this?
1915
1912
1913
1914
33
How many valence electrons does Fluorine have?
7
1
6
5
34
Which of the following is a physical property of ionic compounds?
low solubility of water
low melting and boiling points
poor electrical conductors
crystal lattice structure
35
These particles have no charge. What are they?
Protons
Electrons
Neutrons
Quarks
36
The smallest particle into which an element can be divided and still be the same element
Molecule
Cell
Proton
Atom
37
What happens to atoms during chemical changes?
nothing happens
new atoms form
atoms are rearranged
atoms are destroyed
38
The total number of protons and neutrons in an atom's nucleus is its
Atomic weight
Atomic number
Proton number
Mass number
39
The second energy level can hold up to ---- electrons
2
8
1
16
40
How are elements classified?
Metals, Liquids, and gases
Atomic #s, atomic mass, chemical symbols, and element names
chemical properties, and physical properties
Metals, nonmetals, and metalliods
41
A force that brings oppositely charged ions together
covalent bond
metallic bond
chemical bond
ionic bond
42
How many neutrons are in an atom of bromine?
48
46
45
35
43
The symbol Fe stands for?
Ferric Acid
Flerovium
Iron
Phosphorus
44
These particles are negatively charged. What are they?
Protons
Electrons
Neutrons
Quarks
45
Which of the following is a property of metal?
Good electrical conductor
Cannot bend without breaking
Good thermal insulator
Low melting point
46
The atomic number of an atom describes its...
Mass number
Neutron number
Proton number
Electron number
47
What did Dalton state in his theory of the atom?
atoms are made up of smaller particles negatively charged
all matter made of atoms, atoms of certian elements same
electrons move around the nucleus in a circular path
atoms have a nucleus that is positively charged
48
Look at this diagram. By whom was this model of an atom proposed?
Rutherford
Dalton
Thompson
Bohr
49
Which of the following is NOT a physical properties of ionic compounds?
low solubility of water
Crystal lattice structure
high melting and boiling points
brittleness
50
Who discovered the protons?
Ernest Rutherford
John Dalton
James Chadwick
JJ Thompson
51
All of the following properties are shared by most covalent compounds EXCEPT...
electrical conductivity
low melting and boiling points
poor electrical conductors
Low solubility in water
52
Sulfur is in Group 16, how many valence electrons does sulfur have
2
6
3
4
53
Ionic bonds form between...
a metal and a nonmetal
two metals
two nonmetals
54
The first energy level can hold to ---- electrons
2
3
8
1
55
What kind of bond forms between atoms of a water molecule?
Ionic bonds
Hydrogen bonds
Metallic bonds
Covalent bonds
