A ratio scale and a diagrammatic scale ( bar scale).
<span>CO2. NaCl. HCl. These may all be classified as____. A) elements and compounds B) elements and molecules C) elements and pure substances<em><u> D) compounds and pure substances</u></em>
</span>I believe the correct answer is <em><u>D. Compounds and pure substances</u></em><em><u>.</u></em>
Answer:
Electromagnetic Radiation
Activity: TV or Radio
Type: Infrared Waves
Description of use:A television (also known as a TV) is a machine with a screen. Televisions receive broadcasting signals and turn them into pictures and sound. The word "television" comes from the words tele (Greek for far away) and vision (sight). ... Computers and mobile devices also can be used for watching television programs.
Answer:
aluminum, brass, copper, gold, lead and silver