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Match it!
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Which best represents a balanced equation?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
Which of these is one similarity of the elements in the first group of the periodic table?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
When table salt (NaCl) is produced, which of the following BEST describes the actions of the sodium (Na) and chlorine (Cl) atoms?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
The following chemical reaction occurs. 2H2O2 → 2H2O + O2 How many atoms of hydrogen are involved in the reaction?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
Which statement BEST explains why coal is used to generate electricity despite the amount of pollution produced by burning coal?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
Which best describes how the current periodic table is arranged?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
Why are certain elements placed into the same column on the periodic table?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
Wind farms use turbines to generate electricity without using fossil fuels. What is one negative consequence of using wind turbines to generate electricity?
They have the same number of electrons in their outer energy level.
Developing and maintaining wind farms damages ecosystems.
by atomic number
2Mg(s) + O2(g) - 2MgO(s)
Compared to other fuels, coal is relatively cheap and plentiful.
4
D Sodium and chlorine atoms bond chemically.
The elements in the group react with oxygen in similar ways.
Check it!