2. Name four changes that can occur in response to a change in energy.

## Step 1<br />The question is asking for four changes that can occur in response to a change in energy. This is a broad question that can be interpreted in many ways, but generally, it refers to changes in the physical world where energy is transferred or transformed.<br /><br />## Step 2<br />The first change that can occur in response to a change in energy is a change in temperature. This is because energy, particularly in the form of heat, can cause substances to heat up or cool down. For example, when a substance is heated, its temperature increases.<br /><br />## Step 3<br />The second change that can occur in response to a change in energy is a change in motion. This is because energy can be transferred to an object, causing it to move or change its motion. For example, when a ball is thrown, it moves due to the energy transferred to it.<br /><br />## Step 4<br />The third change that can occur in response to a change in energy is a change in the state of matter. This is because energy can cause a substance to change from one state to another. For example, when ice is heated, it changes from a solid state to a liquid state.<br /><br />## Step 5<br />The fourth change that can occur in response to a change in energy is a change in the chemical composition of a substance. This is because energy can cause a substance to undergo a chemical reaction, changing its composition. For example, when a substance is burned, it undergoes a chemical reaction and changes its composition.