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When writing a symbol for an element, which rule is important to remember?
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
How many different elements are in the chemical formula in CH4?
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
Which of the following chemical symbols best represents an element?
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
Which of the following is most abundant in the Earth’s crust?
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
What forms when carbon (C) and oxygen (O) chemically combine?
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
How many different elements are involved in the chemical equation - C2H5OH + O --> 2 CO+H2O
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
Why is carbon dioxide (CO2) classified as a compound?
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
Which of the following is a chemical formula?
The first letter is always capitalized
the elements are chemically bonded
oxygen
2
a compound
3
NaCl
Fe
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