What is true about the kinds of matter present before and after that matter undergoes a physical change?

What is true about the types of matter present before and after the matter undergoes a chemical change?

Which types of changes follow the law of conservation of mass?

How does heating an object cause a chemical change?

How do you know when a chemical change has occured?

When paper is burned, the mass of the remaining ash is less than the mass of the original paper. Which statement best explains this result?

Which of the following is NOT an example of a physical change?

Which of the following scientists made the biggest contributions to the law of conservation of mass?

If I put a bunch of ice cubes into a glass of water and mark the level of the water, what observation would be made as we watch the ice melt?

Which of the following is an example of a physical change?

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