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Periodic Table and Chemical Reactions Flashcards | StudBud
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Periodic Table and Chemical Reactions
Periodic Table and Chemical Reactions
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1
How many Chlorine (Cl) atoms are in this compound? 3MgCl
2
1
2
6
3
2
Electrons have what type of charge
Positive
Negative
Switch between positive and negative
Neutral
3
Which particles are located in the nucleus?
Protons and neutrons
Electrons and protons
Protons and electrons
4
Magnesium has how many valence electrons?
2
3
12
5
In the process of ionic bonding one atom loses electrons and one atom gains electrons.
False
True
6
In an ionic bond, electrons are shared between atoms.
False
True
7
Neutrons and electrons are attracted to each other.
True
False
8
The general formula for a decomposition reaction is
AB + BC ---> AC + BD
A+B --> AB
AB + C ---> AC + B
AB ---> A + B
9
Identify the reaction type A + B -> AB
Single replacement
Decomposition
Double Replacement
Synthesis
10
The valence shell can hold how many electrons?
2
8
18
32
11
Electrons are found in the nucleus.
True
False
12
Neutrons are located where in the atom?
Nucleus
Both the nucleus and energy levels
Energy levels
13
If an element is inert, that means it will not react with other elements.
True
False
14
The atomic mass of an atom is equal to
The protons + the electrons
The protons + the neutrons
The electrons + the neutrons
15
The period that an element is in tells you the
number of valence electrons
number of energy levels
number of protons
number of neutrons
16
In an endothermic reaction the temperature will decrease.
True
False
17
Ionic bonds occur between a metal and a nonmetal.
False
True
18
Formation of a precipitate is evidence of a chemical reaction.
False
True
19
The following equation is balanced. 4Fe + 3O
2
--> 2 Fe
2
O
3
False
True
20
The first energy level can hold how many electrons?
8
32
18
2
21
All of the following are evidence of a chemical reaction except
Change in color
Production of a gas
Production of sound waves
Change in temperature
22
In the process of ionic bonding, ions come together because
Opposite charges repel
Positive and negative ions attract
Like charges attract
Salt is magnetic
23
Electrons furthest from the nucleus are called
Lost electrons
Shared electrons
Valence electrons
24
In a covalent bond electrons are shared between two atoms.
False
True
25
The general formula for a double replacement reaction is
AB + C ---> AC + B
AB + BC ---> AC + BD
AB ---> A + B
A+B --> AB
26
Neutrons have what type of charge?
Negative
Neutral/No Charge
Positive
27
Identify the reaction type C
x
H
x
+ O
2
-> CO
2
+ H
2
O
Decomposition
Single Replacement
Double Replacement
Combustion
28
The atomic number of an atom is
The number of protons
The protons + the neutrons
The mass of the atom
The number of valence electrons
29
Potassium has how many energy levels?
4
1
19
30
How many Potassium (K) atoms are in this compound? 4K
2
CO
3
8
4
2
1
31
The general formula for a synthesis reaction is
AB + C ---> AC + B
A+B --> AB
AB + BC ---> AC + BD
AB ---> A + B
32
Atoms in a coumn of the periodic table have the same number of energy shells.
True
False
33
Elements in a family (column) on the periodic table all have
The same number of protons
The same number of energy levels
The same number of valence electrons
The same number of neutrons
34
If an atom loses an electron it becomes a _________ ion.
Positive
Negative
Neutral
35
If energy is released during a chemical reaction, it is an exothermic reaction.
True
False
36
It is possible to have a triple covalent bond.
True
False
37
In a neutral atom, the atomic number tells you the number of protons and electrons.
True
False
