8. Which of the following is an example of a chemical element?

a. Salt

b. Water

c. Sugar

d. Sodium

Which metal is more active than NI and less active than Zn? 1. Cu 2. Cr 3. Mg 4. Pb

Mechanical advantage can be calculated by which of the following expression? A) input force/output force B) output force/input force C) input work/output work D) output work/input work

What two trends are commonly seen in modern monthly co2 concentration charts?

For the reaction VCl2 + Cl2 → VCl5, what are the reactants, products, and correct coefficients in the balanced equation?

Can someone tell me what the 5 phases of matter are?

What type of change is a substance that changes form but remains the same?

Which side of the mountain experiences high temperature in windward or leeward

How does light pollution affect plants and animals? Light pollution harms plants and animals because they confuse it with

In what ways are polyatomic ions like simple ions

How does oxygen obey the octet rule when reacting to form compounds? A) It gains electrons. B) It gives up electrons. C) It does not change its number of electrons. D) Oxygen does not obey the octet rule.