G7 CH8 - Physical and chemical reaction

here oxygen reacts with hydrogen to form water. The elements that make this compound are ________

When ice melts to form water, it is a chemical change. (True/False)

Write the name of the product in the space below the diagram.

here oxygen reacts with hydrogen to form water. The compound that is made in this reaction is ________

In a physical change, no new substances are formed. (True/False)

When you let off fireworks, it is a physical change. (True/False)

When your cells use food to release energy, it is a physical change (True/False)

When iron atoms bond with sulfur atoms, it is a chemical change (True/False)

When you cook an egg, it is a chemical change. (True/False)

In the circles of this particle diagram, write the symbols of the elements that make up the product.

When an acid is added to a metal it bubbles and gives off a gas. What is the name of the gas?