Matter Worksheets

Matter Worksheets
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Name _____________________________

Date ___________________

Atoms and Elements
Complete the puzzle.

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SIMPLER	CHEMICALFORMULA	CHEMICALSYMBOL	PERIODICTABLE
ATOMICNUMBER	RADIOACTIVE	CHEMICAL	MOLECULE
SUBATOMIC	ELEMENT	ATOMS

down 2. A group of chemical symbols that represents the atoms that are a part of a compound. (2 words)	down 3. A list of elements. (2 words)	down 4. A ____ change occurs when atoms join to form a compound.	down 6. Atoms are made up of tiny particles, such as protons, neutrons, and electrons, which are known as ____ particles.
down 9. A chemical substance that is made up of only one kind of atom.	across 1. Elements that are unstable and break down naturally, such as uranium, are known as ____ elements.	across 4. One or two letters that represents one element. (2 words)	across 5. A particle which is made up of two or more atoms of the same or different elements. When water is broken down to this, it consists of two atoms of hydrogen and one atom of oxygen.
across 7. An element cannot be broken down into a ____ substance.	across 8. The basic building blocks of matter and the smallest part of an element.	across 10. The number of protons in the nucleus of an atom. Elements are arranged according to this in a periodic table. (2 words)

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