Physical and Chemical Changes Practice

Determine if the following examples represent a chemical change or physical change. When you click on each example, a drop down menu will appear which will allow you to sort the examples into the correct column. Physical Change A change that does not change the identity of a substance melting ice breaking glass cracking an egg boiling water slicing bread making lemonade mowing the lawn breaking a pencil Chemical Change A change that changes the identity of a substance; something new was created that was not there before lighting a match baking bread making toast shooting off fireworks digesting food roasting marshmallows rusting nail frying eggs Look carefully at the pictures below. Which picture shows only a physical change in the wood? Silver is a white metal that is an excellent conductor of heat and electricity. The density of silver is 10.49 g Silver does not react with water but does react with nitric acid. Silver tarnishes when exposed to air. A physical property of silver is Silver reacts with nitric acid Silver does not react with water The density of silver is 10.49 g Silver tarnishes when exposed to air A different chemical substance is formed when piece of cloth is cut candle burns piece of chalk breaks a glass vase shatters Silver is a white metal that is an excellent conductor. Silver tarnishes when exposed to air and light. The density of silver is 10.49 g The melting point is 962 degrees Celsius and the boiling point is 2000 degrees Celsius.A chemical property of silver is density melting point tarnishes in air that it is a conductor Grace is given a piece of wood, an iron nail, and a styrofoam cup. She puts these objects into a bucket of water and observes that the nail sinks to the bottom, the wood floats just under the surface, and the cup floats on top of the water.What property is being demonstrated by this experiment. density melting point solubility temperature Helium balloons! Fun at a party. But do you know one chemical property of helium? Helium is an odorless, colorless gas at room temperature. It is less dense than air. That's why helium balloons float. It is a non-reactive gas, a member of the Noble gas family. Its melting point is -272.2 degrees Celsius and its boiling point is -268.93 degrees Celsius.Consider the paragraph above. What is one chemical property of helium? colorless non-reactive less dense than air boiling point is -268.93 degree Celsius Which of the following is NOT a physical property? malleability solubility color ability to react with oxygen Law of Conservation of Mass - Crash Course Kids Watch the video then answer the questions below. A solution is formed when... the particles that make up matter are unequally distributed in a container. the particles that make up matter become equally distributed in a container. the particles that make up matter react to form a new substance. The formation of a solution is a... physical change. chemical change. both a physical and a chemical change. neither a physical nor a chemical change. A chemical change occurs when... the particles that make up two or more substances do not form a new substance. the chemical properties of two or more substances that come into contact with one another do not change. the particles that make up two or more substances are rearranged to form a new substance. Matter (and its mass) can be created and destroyed True False In _, the Law of Conservation of Mass can be observed. physical and chemical changes a physical change only a chemical change only neither physical nor chemical changes