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Chemical Reactions
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Identify the reactants and products A baking soda mixed with vinegar.
Reactants: baking soda and vinegar Product: gas (carbon dioxide)
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T/F. In a chemical reaction, the substances react together.
True.
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Identify the reactants and products. Iron and sulfur.
Reactants: Iron and sulfur. Product: iron sulfide
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Physical change or chemical change? Burnt toast. Why?
Chemical. It changes colour and irreversible.
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the substances that react together in a chemical reaction
reactants
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Interact and change to make a new substance; also to respond to something.
react
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Physical change or chemical change? Slicing onion. Why?
Slicing is physical, the gas produced is chemical.
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Physical change or chemical change? Fireworks sparkle. Why?
Chemical. It produces heat, light and sound.
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Identify the reactants and products. Lime water is given carbon dioxide.
Reactants: lime water and carbon dioxide Product: milky white colour
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What is a chemical reaction?
a process when two or more substances are mixed together and form a new substance
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Physical change or chemical change? Burning a candle. Why?
Chemical change. It produces smoke.
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the new substances that form in a chemical reaction
products
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the things we know that show us that something has happened or changed
evidence
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Identify the reactants and products. Photosynthesis.
Reactants: Carbon dioxide and water. Product: Sugar and oxygen.
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