Question

q1. physical properties can be observed and measured without changing the substances a. appearance b. composition c. property d. all of the above q2. what is the ability of a substance to burn or ignite, causing fire or combustion? a. chemical stability b. reactivity c. flammability d. conductivity q3. what is the measure of the amount of matter in a substance or an object? a. gallons b. volume c. weight d. mass q4. what is the ability of a substance to change into something else? a. chemical property b. physical property c. viscosity d. buoyancy

Explanation:

• Q1: Physical properties can be observed and measured without changing the substance's composition. Appearance, composition, and other properties fall under this.
• Q2: Flammability is the ability of a substance to burn or ignite, causing fire or combustion.
• Q3: Mass is the measure of the amount of matter in a substance or an object.
• Q4: The ability of a substance to change into something else is a chemical property.

Answer:

Q1: D. All of the above
Q2: C. Flammability
Q3: D. Mass
Q4: A. Chemical property