Explain the following examples in terms of physical or chemical changes: breaking a pencil in two; water freezing and forming ice;
frying an egg; burning wood; leaves turning color in the fall. Please
sure that your answer contains the terms physical properties,
change in state, and change in composition.

Margaret wants to make an orange flavored drink by stirring powdered drink mix into a glass of water. she doesn't like drinks that have small clumps of powdered solid in them, so she wants the drink to be a perfect solution. what factors should margaret not consider when deciding how much powder to add to her glass of water?

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Geothermal energy for industrial use is available almost anywhere. a.true b.false