Question

chemical and physical properties of matter - exit ticket
word bank

• chemical property
• physical property

part a. write the correct term from the word bank on the line next to its definition.

1. a characteristic of matter that can be measured without changing the composition of a substance.
2. a characteristic of matter that can be measured only when a substance changes to a different kind of substance.

part b. classify each property as physical or chemical by writing \physical property\ or \chemical property\ under pictures. (you may use a term more than once.)
length
toxicity
temperature
ph
boiling point
volume
color
reactivity
flammability

Explanation:

• Part A:
• Definition 1 matches the concept of a physical property as it can be measured without altering the substance's composition.
• Definition 2 aligns with a chemical property since it requires a substance to change into a different kind.
• Part B:
• Length: A physical property as it describes a measurable characteristic of an object without changing its composition.
• Toxicity: A chemical property because it relates to how a substance interacts chemically (e.g., with biological systems) and is determined when there is a chemical change (e.g., in a living organism).
• Temperature: A physical property as it measures the average kinetic energy of particles in a substance without changing its chemical makeup.
• pH: A chemical property as it indicates the acidity or basicity of a substance, which is related to its chemical reactivity and composition changes in solution (e.g., in acid - base reactions).
• Boiling point: A physical property as it is a characteristic of a substance that can be measured (the temperature at which a liquid turns to gas) without changing the substance's chemical identity (e.g., water boiling is still H₂O).
• Volume: A physical property as it measures the amount of space a substance occupies without altering its chemical composition.
• Color: A physical property as it is a visual characteristic that can be observed without changing the substance's chemical structure.
• Reactivity: A chemical property as it describes how a substance interacts chemically with other substances (e.g., metals reacting with acids).
• Flammability: A chemical property as it relates to a substance's ability to undergo a chemical reaction (burning, which is a chemical change) in the presence of oxygen.

Answer:

• Part A:
• 1. Physical Property
• 2. Chemical Property
• Part B:
• Length: Physical Property
• Toxicity: Chemical Property
• Temperature: Physical Property
• pH: Chemical Property
• Boiling point: Physical Property
• Volume: Physical Property
• Color: Physical Property
• Reactivity: Chemical Property
• Flammability: Chemical Property