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Questions and Answers
What does a subscript number next to an element's symbol indicate in a chemical formula?
What does a subscript number next to an element's symbol indicate in a chemical formula?
- The atomic number of that element
- The molecular weight of that element
- The number of atoms of that element in the compound (correct)
- The electronegativity of that element
In the chemical compound CaCO₃, how many atoms of oxygen are present?
In the chemical compound CaCO₃, how many atoms of oxygen are present?
- 4
- 1
- 2
- 3 (correct)
What is the chemical name for baking powder?
What is the chemical name for baking powder?
- Sodium Chloride
- Sodium Hydroxide
- Sodium Carbonate
- Sodium Bicarbonate (correct)
Which compound is known as Epsom salt?
Which compound is known as Epsom salt?
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What does the absence of a subscript number next to an element's symbol in a chemical formula indicate?
What does the absence of a subscript number next to an element's symbol in a chemical formula indicate?
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What is the main reason there are so many different types of substances in the world?
What is the main reason there are so many different types of substances in the world?
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What is an example of an element molecule?
What is an example of an element molecule?
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Which type of molecule is water considered to be?
Which type of molecule is water considered to be?
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What are chemical bonds in relation to elements and molecules?
What are chemical bonds in relation to elements and molecules?
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What do chemists use chemical formulas to show?
What do chemists use chemical formulas to show?
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