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Periodic table & Atoms Flashcards | StudBud
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Periodic table & Atoms
Periodic table & Atoms
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1
What element has the atomic number 15
Phosphorus
Oxygen
Chlorine
Potassium
2
Which way does the most reactive metals go on the periodic table?
down
right
up
left
3
Which of Dalton’s postulates required revision?
Atoms can be combined, separated, or rearranged.
Atoms of one element differ from atoms of another element.
Atoms are indivisible.
Atoms combine in whole number ratios.
4
Which of Dalton’s postulates incorporates the Law of Conservation of Mass?
Atoms can be combined, separated, or rearranged.
Atoms from the same elements are identical.
Atoms are indivisible.
All matter is composed of atoms.
5
What model of the atom is represented in this image?
Plum Pudding Model
Bohr’s Model
Electron-Cloud Model
Billiard Ball Model
6
Is Potassium (K) a metal or a nonmetal?
Metal
Nonmetal
Metalloid
7
Why are atoms electrically neutral?
Protons and electrons cancel out each other’s charge.
Neutrons carry no charge.
There are more protons than electrons in atoms.
The neutrons balance out any charge.
8
Elements are organized by their...
chemical properties
atomic mass
physical properties
Symbols
9
What element is found in period 4 group 8
Manganese
Ruthenium
Krypton
Iron
10
Which of the following is NOT a Metal or Nonmetal?
Hydrogen
Gold
Boron
Carbon
11
Which one of these is an alkali earth metal?
Iron
Copper
Hydrogen
beryllium
12
Who organized the periodic table by atomic number
Rutherford
Mendeleev
Dalton
Moseley
13
Atomic Mass
Xe
131.293
54
Pizza
14
What does the atomic mass number of an element tell us?
The number of electrons in one atom of that element
The number of protons & electrons in an atom of that element
The number of neutrons & protons in one atom of that element
The number of neutrons in one atom of that element
15
Good morning, what is the most reactive metal
Lithium
Francium
Radium
Cesium
16
Which of these is a noble gas?
Cobalt
Iron
Xenon
Nickel
17
Experiments with the cathode ray resulted in the discovery of?
Atoms
Protons
Neutrons
Electrons
18
Which subatomic particle has the smallest mass?
Proton
Electron
Neutron
Nucleus
19
What is a characteristic of an Alkali Metal?
High boiling and melting points
Unreactive
Low boiling point
Malleable
20
How many periods on the periodic table
5
3
7
6
21
Which group does not react with other elements
alkali metals
halogens
noble gases
transition metals
22
What is a metal
None of the above
An element that conducts electricity and heat poorly
An element with the same properties as metals and nonmetals
An element that is shiny and conducts heat and electricity
23
WHICH DESCRIBES A METAL
SHARP
BRITTLE
DULL
SHINY
24
What are the radioactive elements with the atomic number 90-103 called
actinides
noble gases
alkali metals
lanthanides
25
Which Groups On The Periodic Table Are The Most Reactive
Groups 4 And 12
Groups 3 and 15
Groups 7 And 13
Groups 1 And 17
26
The term “atom” comes from the Greek philosopher named?
Democritus
Galileo
Aristotle
Socrates
27
Number of Neutrons?
16
8
7
15.9994
28
Which model of the atom is used today?
Plum Pudding Model
Bohr Model
Electron-Cloud Model
Billiard Ball Model
29
What element has the atomic number 25
Aluminum
Manganese
Iron
Gold
30
What did Rutherford conclude about the atom as a result of his Gold Foil experiment?
Protons are positively charged.
The atom is composed of mainly empty space.
Electrons float in a positively charged substance.
The atom is a densely packed substance.
31
Is Sulfur a Metal, Nonmetal, or Metalloid?
Metal
Metalloid
Nonmetal
32
What is Niels Bohr’s contribution to modern atomic theory?
Electrons exist outside of the nucleus.
Electrons are found in specific energy levels.
Electrons exist in regions of space called orbitals.
Electrons have a negative charge.
33
Modern atomic theory shows electrons orbiting around the nucleus like planets around the sun.
True
False
34
What model of the atom is represented in this image?
Bohr’s Model
Plum Pudding Model
Electron-Cloud Model
Billiard Ball Model
35
What does the atomic number do?
Tell the amount of electrons and protons
Tell the amount of just protons
Tell the amount of just neutrons
Tell the amount of just electrons
36
Oxygen and carbon always combine in a 1:2 mass ratio. This is an example of which law?
Law of Conservation of Mass
Law of Definite Proportions
Law of Definite Mass
Law of Conservation of Proportions
37
Who created the Periodic Table?
John Napier
Hans Lippershey
William Gilbert
Dimitri Mendeleev
38
The majority of the mass of an atom comes from which subatomic particle(s)?
Neutrons + Electrons
Protons + Electrons
Protons
Neutrons + Protons
39
What element has the lowest atomic number?
Hydrogen
Helium
Beryllium
Lithium
40
Where are most metals on the periodic table
In the middle only
On the right side only
On the left side and in the middle
On the left side only
41
WHICH DESCRIBES A NONMETAL
BRITTLE
SHARP
SHINY
DULL
42
Which scientist is responsible for the discovery of the nucleus?
J. J. Thomson
Niels Bohr
Ernest Rutherford
John Dalton
43
What is a nonmetal
An element with both metal and nonmetal properties
None of the above
An element that is shiny and conducts heat and electricity
An element that doesn't conduct electricity and heat well
44
How do you calculate the number of neutrons in an atom using atomic weight and atomic number?
add the atomic weight to the atomic number
take away the atomic number from the atomic mass
subtract the atomic weight from the number of electrons
Take away the atomic mass from the atomic number
45
What element is found in group 2 period 4
Titanium
Calcium
Magnesium
Sodium
46
The group of elements on the right of the periodic table are the
metalloids
alkali metals
non-metals
metals
47
Is hydrogen a metal?
Yes. Always.
If it's an ion
No. Never.
Yes because Lithium is a metal.
48
Elements is a group share
metallic properties
same number of electrons
same number of protons
chemical properties
