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What is a scientific investigation?

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A scientific investigation is a process used to answer questions or test ideas through observation and experimentation.

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What is the importance of evidence in scientific results?

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Evidence is crucial because it supports the validity of the results and conclusions drawn from an investigation.

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What happens to the rate of dissolving when you stir a solution?

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Stirring a solution increases the rate at which a solute, like salt, dissolves in a solvent, like water.

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What is a chemical change?

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A chemical change occurs when a substance transforms into a new substance with different properties, such as toasting marshmallows.

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What causes ice cream to melt?

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Ice cream melts when heat is added, causing the solid to change into a liquid.

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What is the difference between a physical change and a chemical change?

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A physical change alters the form of a substance without changing its chemical composition, while a chemical change results in new substances.

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What is rusting?

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Rusting is a chemical process where iron reacts with oxygen and moisture, forming iron oxide, commonly known as rust.

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Why is it important for scientific results to be reproducible?

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Reproducibility ensures that results are reliable and can be verified by other scientists.

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What is an example of a question that can be answered by scientific investigation?

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An example is 'What causes some metals to rust?'

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What is the role of a hypothesis in a scientific investigation?

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A hypothesis is a testable prediction about the outcome of an experiment.