Crossword Puzzle for Chemistry Terms!

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  1. 5. A type of chemical reaction that releases heat, making the surroundings warmer. For example, burning wood is an exothermic reaction because it gives off heat and light.
  2. 6. A process where substances (reactants) are transformed into new substances (products) with different properties. For example, when vinegar and baking soda mix, they react to form carbon dioxide gas.
  3. 7. A way to organize information and results from an experiment in rows and columns. It helps you keep track of what you observed and makes it easier to analyze the data.
  4. 9. The starting substances in a chemical reaction. They are what you mix together to start a reaction.
  5. 10. The new substances that are formed as a result of a chemical reaction. They appear after the reactants have reacted.
  6. 12. The factor that you change or test in an experiment to see how it affects the outcome. For example, if you’re testing how light affects plant growth, the amount of light would be the independent variable.
  7. 13. When your experimental results support your hypothesis, meaning your guess was correct. It shows that your prediction was right based on the evidence you collected.
Down
  1. 1. A type of chemical reaction that absorbs heat from its surroundings, making the surroundings cooler. An example is photosynthesis in plants, where they absorb heat energy from the sun to make food.
  2. 2. When your experimental results do not support your hypothesis, meaning your guess was not correct. It shows that your prediction was wrong and you need to reconsider your ideas.
  3. 3. An educated guess or prediction about what you think will happen in an experiment based on what you already know. It’s like a starting point for your investigation.
  4. 4. The factor that you measure or observe in an experiment, which changes based on the independent variable. For instance, in the plant growth experiment, the plant height would be the dependent variable.
  5. 8. A visual representation of data, like a bar graph or line graph, which helps you see patterns and trends in your experiment results quickly.
  6. 11. A substance that speeds up a chemical reaction without being used up or changed in the process. It's like a helper that makes reactions go faster.