Making toast is a physical change.
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Answer:
C. substances that are used up in a reaction
Explanation:
Substances are combined in a chemical reaction to give rise to other substances. The substances that come together are called REACTANTS while the substances that are produced are called PRODUCTS.
Reactants are used up in the reaction to give rise to new products at the end of the reaction. For example, in the reaction as follows:
6CO2 + 6H2O --> C6H12O6 + 6O2
CO2 (carbon dioxide) and water (H2O) are the REACTANTS of the reaction, which are used up to form glucose and oxygen (products)
A chemical reaction involves an interaction between two or more species to yield a product.
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What is a chemical reaction?</h3>
A chemical reaction involves an interaction between two or more species to yield a product.
The following is the classification of the reactions based on type;
- The first reaction shown in the attachment is a condensation reaction
- The second reaction is an addition reaction
- The third reaction is an elimination reaction
- The fourth reaction is a substitution reaction
Learn more about reaction:brainly.com/question/9524025
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