Unit 1 Vocab Flashcard 1

Front

Name of an element

Back

Chemical Symbol

Front

A substance not mixed with others

Back

Pure Substance

Front

Formation of a new substance with different properties. Examples: rusting bike, baking cake, spoiled milk, baking soda + vinegar.

Back

Chemical Change

Front

A pure substance made by chemically combining two or more elements. Example: NaCl

Back

Compound

Front

A pure substance that cannot be broken down into simpler substances. Examples: H, O, Fe, Au.

Back

Element

Front

Change that alters physical properties (e.g., cutting paper)

Back

Physical Change

Front

Solid formed in a chemical change (e.g., chunks in spoiled milk)

Back

Precipitate

Front

The small number to the right and below an element (e.g., the 2 in H₂O)

Back

Subscript

Front

Representation of a compound showing elements & atom count (e.g., H₂O)

Back

Chemical Formula

Front

Not a pure substance, can be separated. Example: Trail Mix

Back

Mixture