1. identify the following examples as elemental molecules, compound molecules, or mix\noxygen\ncarbon…

1. identify the following examples as elemental molecules, compound molecules, or mix\noxygen\ncarbon dioxide\nnitric acid\nhydrochioric acid\nair\nnitrogen\n2. complete the following definitions.\na. an atom or element is a __________ substance that is made up of __________ atom.\nb. an elemental molecule is made up of ______________________________ atoms that are ____________________.\nc. a compound molecule is made up of ______________________________ atoms that are ____________________.

1. identify the following examples as elemental molecules, compound molecules, or mix\noxygen\ncarbon dioxide\nnitric acid\nhydrochioric acid\nair\nnitrogen\n2. complete the following definitions.\na. an atom or element is a __________ substance that is made up of __________ atom.\nb. an elemental molecule is made up of ______________________________ atoms that are ____________________.\nc. a compound molecule is made up of ______________________________ atoms that are ____________________.

Answer

Explanation:

Step1: Recall definitions

An elemental molecule consists of atoms of the same element, a compound molecule has atoms of different elements, and a mixture contains different substances.

Step2: Analyze oxygen

Oxygen ($O_2$) has only oxygen atoms, so it is an elemental molecule.

Step3: Analyze carbon - dioxide

Carbon - dioxide ($CO_2$) has carbon and oxygen atoms, so it is a compound molecule.

Step4: Analyze nitric acid

Nitric acid ($HNO_3$) has hydrogen, nitrogen, and oxygen atoms, so it is a compound molecule.

Step5: Analyze hydrochloric acid

Hydrochloric acid ($HCl$) has hydrogen and chlorine atoms, so it is a compound molecule.

Step6: Analyze air

Air contains nitrogen, oxygen, carbon - dioxide etc., so it is a mixture.

Step7: Analyze nitrogen

Nitrogen ($N_2$) has only nitrogen atoms, so it is an elemental molecule.

Answer:

Oxygen: Elemental Molecule Carbon dioxide: Compound Molecule Nitric acid: Compound Molecule Hydrochloric acid: Compound Molecule Air: Mixture Nitrogen: Elemental Molecule

Explanation for definitions:

Step1: Define atom/element

An atom or element is a pure substance that is made up of one type of atom.

Step2: Define elemental molecule

An elemental molecule is made up of two or more atoms that are of the same element.

Step3: Define compound molecule

A compound molecule is made up of two or more atoms that are of different elements.

Answer for definitions:

a. pure; one type of b. two or more; of the same element c. two or more; of different elements