Question

short answer / writing prompt
does combining two or more substances always result in a chemical reaction? state your answer as a claim. support your claim with evidence from the article. think about what you read about mixtures, then explain why the evidence from the text supports your claim.

Explanation:

Combining substances doesn't always lead to a chemical reaction. Mixtures are formed when substances are combined physically without changing their chemical identities. For example, a mixture of sand and water is just a physical combination where no new substances are formed. Chemical reactions occur when substances react chemically to form new substances with different properties. The text likely details how in mixtures, substances retain their original properties, which supports the claim that combination doesn't always mean a chemical reaction.

Answer:

No, combining two or more substances does not always result in a chemical reaction because in mixtures, substances are physically combined and retain their original properties without forming new substances chemically.