Question

matter :elements and compounds
chemistry honors
slide 21: what are the two pieces of information represented in a chemical formula?
slide 22: study the given visual model :
a) what type of spheres are atoms represented as?
b) how many spheres are in a molecule?
c) how does the molecule of a compound differ from the molecule of an element?
slide 23: shows visual representations of
a) atoms of an element
b) molecules of an element
c) molecules of a compound
d) mixture of elements and compounds.

Explanation:

For Slide 21: A chemical formula represents the elements present and the number of atoms of each element. For Slide 22a: In visual models, atoms can be represented as colored or differently - sized spheres. Slide 22b: The number of spheres in a molecule depends on the compound and its formula. Slide 22c: A compound's molecule has atoms of different elements, while an element's molecule has atoms of the same element. For Slide 23, visual representations can distinguish between atoms of an element, molecules of an element, molecules of a compound, and mixtures of elements and compounds based on the types and combinations of atoms shown.

Answer:

Slide 21: The elements present and the number of atoms of each element.
Slide 22a: Colored or differently - sized spheres.
Slide 22b: Varies based on the compound.
Slide 22c: A compound has atoms of different elements; an element has atoms of one element.
Slide 23a: Atoms of a single element shown individually.
Slide 23b: Molecules made up of atoms of the same element.
Slide 23c: Molecules made up of atoms of different elements.
Slide 23d: A combination of single - element atoms/molecules and multi - element molecules.