Which element reacts with oxygen to create an ionic bond?

calcium

hydrogen

chlorine

nitrogen

Which of these answers best describe a fossil?

Sometimes more than one egg is released at a time. What do you think would happen if two eggs were released and both were fertilized? Explain your answer

Why does the solution turn from yellow to blue?

According to the trend shown by the graph, what volume of water would you expect after 35 seconds of dripping?

How is an animal cell related to tissue and organs

If something is in high resolution you can see and object but not very clearly. True or False.

Which change might cause a cold spell in the northern united states

Kipps appratus is for what?

Which of the following statements about protons are true? Protons have twice the mass of neutrons. Protons have the same magnitude of charge as electrons but are opposite in sign. Protons have a charge of 1+.

What is true of an acidic solution at room temperature?