Questions: What do these two changes have in common? using a large magnet to remove pieces of iron from a junkyard sticking up a paper clip with a magnet Select all that apply. Both are changes of state. Both are caused by cooling? Both conserve mass. Both are only physical changes.

What do these two changes have in common? using a large magnet to remove pieces of iron from a junkyard sticking up a paper clip with a magnet

Select all that apply.

Both are changes of state.
Both are caused by cooling?
Both conserve mass.
Both are only physical changes.

Transcript text: What do these two changes have in common? using a large magnet to remove pieces of iron from a junkyard sticking up a paper clip with a magnet Select all that apply. Both are changes of state. Both are caused by cooling? Both conserve mass. Both are only physical changes.

Solution

Solution Steps

Step 1: Understanding the Context

The question presents two scenarios involving the use of a magnet: removing pieces of iron from a junkyard and picking up a paperclip with a magnet. We need to determine what these scenarios have in common.

Step 2: Analyzing the Options

The options provided are:

Both are changes of state.
Both are caused by cooling.
Both conserve mass.
Both are only physical changes.

Step 3: Evaluating Each Option

Changes of State: This involves a transition between solid, liquid, and gas phases, which is not applicable to the scenarios.
Caused by Cooling: Cooling is not involved in either scenario.
Conserve Mass: Both scenarios involve the movement of objects without altering their mass.
Only Physical Changes: Both scenarios involve physical manipulation (using a magnet) without changing the chemical composition of the objects.