مناسب جهت تقویت زبان انگلیسی

What are three states of matter.Why is cutting paper a physical change Is a salad a mixture. Why or why not. In this book you read about dissolving salt in water. Write to explain why it is a mixture and how you could demonstrate this. Use details from the book as you write. Cause and Effect What causes water to turn into ice? What is the effect on the state of matter.