Question

Clues
Across
2. Substances formed during a chemical
reaction.
5. Substance made of two or more
elements combined chemically.
7. The number of atoms present in one
molecule of a substance.
8. Substances that react together in a
chemical reaction.
10. A group of one or more atoms which
can exist independently.
Down
1. Smallest unit of matter that has all
characteristics of a substance.
3. Group of atoms that can participate
in chemical reactions but cannot
exist independently.
4. Combining capacity of an element.
6. Anything that has mass and occupies
space.
9. A pure substance made of one kind
of atoms only.​

Answer 1

Answer:

Across:

1. Product
2. Matter
3. Atomicity
4. Compound
5. Molecules

Down

1. atom
2. Molecules
3. valency
4. Volume
5. Element.