Why Do Chemists Use Models of Atoms and Molecules

question 16

Multiple Choice

Why do chemists use models of atoms and molecules?

• A)Use of models is more convenient and less expensive than using photographs from microscopes
• B)Matter at the particulate level is too small to be seen
• C)Chemists follow the tradition established by Watson and Crick
• D)High-powered electron microscopes create computerized models of atoms and molecules
• E)To illustrate textbooks and scientific reports with more color than black-and-white photographs of the atoms and molecules

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Definitions:

Issue of Shares

Refers to the process by which a corporation issues new shares of stock to raise capital, often to expand or to undertake new projects.

Direct Method

A way of reporting cash flows from operating activities by listing major classes of gross cash receipts and payments.

Indirect Method

A way of reporting cash flows from operating activities by starting with net income and adjusting for items that affected reported net income but didn't involve actual cash flows.

Operating Activities

Activities directly related to the day-to-day business operations, including cash flows from selling products or providing services.