Which of the following is a chemical change?

Which statement is true about physical changes and chemical changes?

Which of the following is a chemical change?

Which of the following is a physical change?

Which of the following is NOT a physical change?

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

Which of the following is NOT a chemical change?

Scientists study the characteristics of substances to better understand the natural world. Which of the following is not a chemical or physical characteristic of a substance?

Which of the following is evidence of a chemical change?

You blow dry your wet hair. What type of change?

You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it. (Rust)

True or False. When ice cream melts, a chemical change occurs.

In a fireworks show, the fireworks explode giving off heat and light. What type of change?

Chewing food to break it down into smaller particles represents a _________ change, but the changing of starch into sugars by enzymes in the digestive system represents a ___________change.

A straight piece of wire is coiled to form a spring. What type of change?

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