15 questions
Is water, H2O, a mixture, element, or compound?
mixture
element
compound
Is Chlorine, Cl, a mixture, element, or compound?
mixture
element
compound
An atom is:
a substance that has only one type of atom
a group of two or more atoms held together by chemical bonds
basic unit from which all matter is made
substance made of two or more elements that are chemically combined
A molecule is:
a substance that has only one type of atom
a group of two or more atoms held together by chemical bonds
basic unit from which all matter is made
substance made of two or more elements that are chemically combined
An element is:
a substance that has only one type of atom
a group of two or more atoms held together by chemical bonds
basic unit from which all matter is made
substance made of two or more elements that are chemically combined
A compound is:
a substance that has only one type of atom
a group of two or more atoms held together by chemical bonds
basic unit from which all matter is made
substance made of two or more elements that are chemically combined
A molecule is a group of two or more atoms held together by chemical bonds. A molecule can be:
One type of element (ex: H2 or O2)
More than one type of element (ex: CO2)
None of the above
A compound is a substance made of two or more elements. A compound can be:
One type of element (ex: H2 or O2)
More than one type of element (ex: CO2)
neither