Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.
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Question: Question: What bond is a force of attraction between ions and atoms? Answer: chemical bond

Answer: A chemical bond is a force of attraction between atoms or ions. Bonds form when atoms share or transfer valence electrons.

Question: Question: What is caused when circulating blood puts pressure on the walls of blood vessels? Answer: blood pressure

Answer: Blood pressure occurs when circulating blood puts pressure on the walls of blood vessels.

Question: Question: What are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts? Answer: electromagnets

Answer:
Electromagnets find use in many practical applications. Electromagnets are used to lift large masses of magnetic materials such as scrap iron, rolls of steel, and auto parts.