Which of the following is the only metal that is liquid at room temperature?

A. Nickel

B. Magnesium

C. Sodium

D. Mercury

Can you discribe physical and chemical properties

How do you make a Bohr's model

An organism that eats leaves, grass, algae, or seaweed would be considered a A: producer B: tertiary consumer C: primary consumer D: decomposer

Compare the function of a switch in an electric circuit to the function of a water faucet. How are they different?

What force makes a ball rolling along the ground slow down

A nuclear reaction only involves valence electrons. True or False?

If a farmer wants to increase the health of his crops, he could apply a nitrogen-based fertilizer. why is nitrogen important to plants?

A car battery produces electrical energy with the following chemical reaction. Pb + PbO2 + 2H2SO4; 2PbSO4 + 2H2O What is the mole ratio of PbO2 to water?

Which of the following is an example of the electrostatic force acting in a atom a. a neutron attracting a electron b. a neutron attracting a proton c. an electron attracting another electron d. a proton attracting an electron

When does water move between the surface of earth and the atmosphere