What do these two changes have in common? sediment settling to the bottom of a muddy puddle dust settling out of the air Select all that apply. Both are chemical changes. Both are only physical changes. Both are caused by cooling. Both are changes of state.

## Step 1<br />The problem presents two scenarios: sediment settling to the bottom of a muddy puddle and dust settling out of the air. We are asked to identify the commonality between these two changes.<br /><br />## Step 2<br />The first scenario involves sediment settling to the bottom of a muddy puddle. This is a physical change because the sediment is not chemically reacting with the water. Instead, it is simply being separated from the water due to gravity.<br /><br />## Step 3<br />The second scenario involves dust settling out of the air. This is also a physical change because the dust is not chemically reacting with the air. Instead, it is simply being separated from the air due to gravity.<br /><br />## Step 4<br />By comparing the two scenarios, we can see that both involve particles settling out of a fluid due to gravity. This is a physical change, not a chemical change, because the particles are not chemically reacting with the fluid.<br /><br />## Step 5<br />The options "Both are caused by cooling" and "Both are changes of state" are not correct because neither of the changes described involve cooling or a change of state.