The ancestors of invertebrates produced enough oxygen to oxidize minerals dissolved in the ocean and surface sediments through a process called respiration
Indicate whether the statement is true or false
False
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Much of the early hydrogen and helium escaped the earth's atmosphere into space because ________
A) Solar winds were strong B) The earth's gravity was strong C) Solar winds were weak D) The earth's gravity was weak E) All of the above
Which of the following is true of most bleaches?
A) They are reducing agents. B) They are oxidizing agents. C) They are both reducing agents and oxidizing agents. D) They are neither reducing agents nor oxidizing agents.
Provide an explanation for how a tornado could lift the roof off a building, and why it is not a good idea to open windows of a building during a tornado
What will be the ideal response?
Does an ionic bond have a dipole?
A. No, but the electrical charges are relatively strong. B. No, dipoles are only found in covalent compounds. C. Yes, but for ionic compounds, they are referred to as monopoles. D. Yes, the ionic bond is an example of a very strong dipole.