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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
The variable in an experiment that is changed as a result of the experiment is called...
control
dependent variable
constant
independent variable
2
How many electrons fit on the second shell of an atom?
4
8
1
2
3
Which list contains elements with similar properties?
H, Be, Sc
B, C, P
Y, Zr, Nb
Cl, Br, I
4
7.65 hm = ________ dm
76.5
0.765
765
7650
5
How many protons does this element have?
20
2
1
40
6
Which of these is an example of an endothermic reaction?
baking bread
burning paper
lighting a candle
boiling water
7
This bond forms when two or more atoms share electrons.
gaseous
covalent
metallic
ionic
8
What are valence electrons?
electrons on the second shell
electrons on the outer shell
electrons on the first shell
positive electrons
9
Which of these statements is correct?
nuclear fusion occurs when an atom splits
nuclear power is one of the top forms of energy in the US
nuclear fission occurs when an atom splits
nuclear fission occurs in the sun
10
Silicon is a ______________.
metalloid
metal
nonmetal
11
When an atom loses or gains a proton, it is called a(n) _______________.
isotope
ion
bonded
new element
12
What kind of bond is illustrated here?
metallic
covalent
potassium
ionic
13
Elements that have similar properties are in ____________ on the periodic table.
diagonals
rows
groups
periods
14
Most elements want to form bonds that give them a total of _____ valence electrons.
8
1
10
2
15
How many atoms of carbon are in this compound? CHCl
3
2
3
1
4
16
If an atom loses an electron, it is a -
negative ion
positive ion
new element
isotope
17
What are the products in this equation? C
3
H
8
+ 5O
2
-> 3CO
2
+ 4H
2
O
C3H8 + 5O2
C3H8
O2 + H2O
3CO2 + 4H2O
18
The group in an experiment that does not receive a variable is called the...
independent variable
control
constants
dependent variable
19
How many total atoms are in this compound? NaHCO
3
12
4
6
3
20
The elements in the last group on the periodic table are called...
alkaline earth metals
noble gases
alkali metals
halogens
21
How many protons does an atom of Iodine have?
53
16
127
126
22
When two nonmetals combine, they form ___________ bonds.
permanent
gaseous
ionic
covalent
23
How many valence electrons does Aluminum have?
13
2
8
3
24
How many neutrons does this element have?
23
12
11
10
25
Vertical columns on the periodic table are called...
rows
periods
groups
families
26
What kind of bond is illustrated here?
ionic
quadratic
covalent
carbons
27
In which period is Zinc?
12
4
30
IIB
28
When metals and nonmetals combine, they form _________________ bonds.
covalent
ionic
metallic
permanent
29
The elements in the first group in the periodic table are called...
halogens
noble gases
alkali metals
alkaline earth metals
30
This bond forms when one element gives away electrons to another element.
gaseous
covalent
metallic
ionic
31
Calcium is a __________________.
metal
metalloid
nonmetal
32
Which of these is a disadvantage of nuclear energy?
it produces very little energy
it is difficult to dispose of waste
it creates jobs
it is made in reactors
33
Which compound in this equation has a coefficient? <u></u>6CO
2
+ 6H
2
O -> C
6
H
12
O
6
+ 6O
2
6CO2
H2O
C6H12O6
O2
34
If an atom gains an electron, it is a -
new element
positive ion
negative ion
isotope
35
The variable in an experiment that is changed by the scientist is called the...
control group
independent variable
dependent variable
constant
36
When an atom loses or gains an electron, it is called a(n) _______________.
new element
tertiary
isotope
ion
37
Horizontal rows on the periodic table are called...
groups
families
periods
rows
38
How many total electrons does an atom of Magnesium have?
24
12
2
13
39
How many electrons fit on the first shell of an atom?
2
1
8
4
40
In which group is Fluorine?
9
2
17
7A
41
Which of these is an advantage of nuclear energy?
it produces very little pollution
it is very safe compared to other energy sources
power plants run a risk of explosion
it produces radioactive waste
42
How many valence electrons does this element have?
11
1
23
12
43
Which of these is an example of an exothermic reaction?
wood burning in a campfire
human digestion
alka seltzer in water
photosynthesis
