Question

do now: 1. which of the following is not a characteristic of a physical change? a.) new shape b.) different color c.) new size d.) new substance 2. which property remains constant even after physical and chemical changes? a.) density b.) shape c.) mass d.) arrangement of particles 3. explain how to identify a physical change? do now: tuesday

Explanation:

1. In a physical change, no new substances are formed. A new shape, different color, or new size can occur in a physical change. So the answer to the first question is d.
2. According to the law of conservation of mass, mass remains constant in both physical and chemical changes. Density can change in a physical change (e.g., change of state), shape changes in physical changes, and the arrangement of particles can change in a physical - change like melting. So the answer to the second question is c.
3. A physical change can be identified when there is a change in physical properties such as state (solid - liquid - gas), shape, size, color, or texture, but no new substances are formed.

Answer:

1. d. new substance
2. c. mass
3. Look for changes in physical properties like state, shape, size, color, or texture without the formation of new substances.