Question

Chemical properties


include mass and color


include changes of state of a substance.


can be observed without altering the identity of the substance.


include changed that alter the identity of the substance.

Answer 1

It looks like the statements need to be sorted and corrected. Here’s a clear summary:

Physical properties
- Definition: Properties that can be observed or measured without changing the chemical identity of a substance.
- Correct examples from your list: mass and color are physical properties.
- Mass is an extensive physical property (depends on amount).
- Color is an intensive physical property (does not depend on amount).
- Changes of state (melting, freezing, boiling, condensation, sublimation) are physical changes — the substance’s identity remains the same.

Chemical properties
- Definition: Properties that describe a substance’s ability to undergo chemical changes that produce new substances.
- These include reactivity with other chemicals (e.g., oxygen, acids, bases), flammability, corrosion, oxidation states, and decomposition.
- Chemical changes (reactions) alter the identity of the substance (e.g., iron → rust, wood → ash + gases).

Corrected versions of your fragments
- “Chemical properties include mass and color.” — Incorrect. Mass and color are physical properties.
- “Include changes of state of a substance.” — Changes of state are physical changes/properties, not chemical.
- “Can be observed without altering the identity of the substance.” — This describes physical properties.
- “Include changes that alter the identity of the substance.” — This describes chemical properties.

If you’d like, I can give more examples or a short worksheet to practice identifying physical vs chemical properties/changes.