Question

identifying physical and chemical changes
the list below includes some of the properties of
ammonia. identify the physical properties in the
list. check all of the boxes that apply.
□ gas at room temperature
□ strong, unpleasant odor
□ reacts with hydrochloric acid
□ dissolves easily in water
□ burns in oxygen
done

Explanation:

Physical properties are characteristics of a substance that can be observed or measured without changing the substance's chemical identity. Chemical properties describe how a substance reacts to form new substances.

• "gas at room temperature" is an observable state of matter (no chemical change).
• "strong, unpleasant odor" is a sensory property observed without altering ammonia's chemistry.
• "reacts with hydrochloric acid" involves a chemical reaction forming new substances (chemical property).
• "dissolves easily in water" is a solubility property (physical, as dissolved ammonia remains ammonia).
• "burns in oxygen" is a chemical reaction forming new compounds (chemical property).

Answer:

☑️ gas at room temperature
☑️ strong, unpleasant odor
☑️ dissolves easily in water