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Understanding Matter: Changes, Elements, and Experiment Variables

This study guide covers fundamental concepts in matter, including types of changes, elements, compounds, and experimental variables. It explores examples of physical and chemical changes, distinguishing between mixtures and compounds, and defines key terms like density, mass, and solubility. Key questions tackled include identifying which items are not matter, recognizing changes in states of matter, and understanding what variables are manipulated in experiments. This resource is designed to enhance comprehension of basic science principles essential for deeper learning.

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Understanding Matter: Changes, Elements, and Experiment Variables

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  1. Unit 2 Study Session

  2. Which of these is NOT matter? • Kite • Air • Heat • Apple

  3. Which is an example of a physical Change? • Cutting paper • Dying your hair • Roasting hot dogs • Fireworks

  4. Which is an example of a chemical change? • Spreading butter • Throwing a ball • Slicing bread • Digesting Food

  5. Which best describes a tossed salad? • Element • Mixture • Compound • Solution

  6. Which of the following is an element? • Carbon dioxide (CO2) • Sodium chloride (NaCl) • Air (C, N, O) • Gold (Au)

  7. Dissolving sugar in water is… • Solubility • Physical Change • Chemical Change • Both (1) and (2)

  8. States of matter change by adding or removing… • Atoms • Matter • Energy • Particles

  9. A compound is… • Chemically combined • Physically combined • A pure substance • Found on the periodic table

  10. You slice a loaf of bread. What happens to the mass? • Mass goes up • Mass goes down • Mass stays the same • Mass changes in an hour

  11. A ping pong ball floats. What term describes floating and sinking? • Density • Gravity • Weight • Volume

  12. Gravitational force is… • Matter • Volume • Weight • Mass

  13. Amount of space taken up is…. • Matter • Volume • Weight • Mass

  14. Water on the outside of a glass of ice water… • Freezing • Vaporization • Condensation • Sublimation

  15. A substance losing energy and becoming organized and compact… • Freezing • Vaporization • Condensation • Sublimation

  16. How many variables do you test in an experiment? • None • One • Two • Three

  17. Which variable is the test (manipulated variable) • Independent • Dependent • Control • Scientific

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