What are the smallest units an element can be broken down into and still retain its defining properties?

molecules

protons, neutrons, and electrons

nanograms

atoms

Which of the following was NOT among Democritus's ideas

Hands on mole activity

The distance between Earth and its moon is 384000000 meters. Express this distance in kilometers.

Why is it dangerous to react sodium and potassium with dulute sulphuric acid?

in the metric system what does kilo stand for

Provide an explanation at the subatomic level to explain why different colors are observed for different metal salts.

Indicate whether the following statements describe the primary, secondary, tertiary, or quaternary protein structure. (More than one can apply). A. R groups interact to form disulfide bonds or ionic bonds. B.

Equal masses (in grams) of hydrogen gas and oxygen gas are reacted to form water. Which substance is limiting? a. Oxygen gas is limiting b. Hydrogen gas is limiting. c. Water is limiting. d. Nothing is limiting. e.

Many things can cause an organism to become extinct. Here are some possible causes of extinction. Select the human causes of extinction.

Which word equation shows lithium oxide being formed from the reaction between oxygen and lithium? oxygen + lithium oxide Right arrow. Lithium lithium + oxygen Right arrow. Lithium oxide oxygen + lithium Right arrow.