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