there are four sketches below. the first sketch shows a sample of substance x. the three sketches underneath…

there are four sketches below. the first sketch shows a sample of substance x. the three sketches underneath it show three different changes to the sample. you must decide whether each of these changes is possible. if a change is possible, you must also decide whether it is a physical change or a chemical change. each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. also, you should assume that you can see the entire sample, and that the sample is in a sealed box, so that no matter can enter or leave.\n\nsample of substance x\n\nchange 1\nchange 1 is:\nimpossible\na physical change\na chemical change\n\nchange 2\nchange 2 is:\nimpossible\na physical change\na chemical change\n\nchange 3\nchange 3 is:\nimpossible\na physical change\na chemical change

there are four sketches below. the first sketch shows a sample of substance x. the three sketches underneath it show three different changes to the sample. you must decide whether each of these changes is possible. if a change is possible, you must also decide whether it is a physical change or a chemical change. each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. also, you should assume that you can see the entire sample, and that the sample is in a sealed box, so that no matter can enter or leave.\n\nsample of substance x\n\nchange 1\nchange 1 is:\nimpossible\na physical change\na chemical change\n\nchange 2\nchange 2 is:\nimpossible\na physical change\na chemical change\n\nchange 3\nchange 3 is:\nimpossible\na physical change\na chemical change

Answer

Explanation:

Step1: Recall physical and chemical change definitions

Physical change - no new substances formed, only state or arrangement changes. Chemical change - new substances formed, bonds broken and formed.

Step2: Analyze Change 1

The molecules' arrangement changes but no new substances are formed. So it's a physical change.

Step3: Analyze Change 2

The molecules are re - arranged into a more ordered pattern but no new substances are created. It's a physical change.

Step4: Analyze Change 3

New combinations of atoms are formed, indicating new substances. So it's a chemical change.

Answer:

Change 1 is: a physical change Change 2 is: a physical change Change 3 is: a chemical change