What type of atom is an atom with 9 protons, 9 neutrons, and 10 electrons a. ion b. A normal atom c. Isotope

Which of the following trophic levels is the highest?

Which of the following could indicate that a chemical change has taken place? gas formation formation of a precipitate color change all of the above

A teacher has asked some groups of students to investigate the relationship between the organ systems of the human body. One group of students made the argument that many of the systems are related to each other.

What type of reaction will occur when lead nitrate is mixed with the potassium iodide solution?

Which factor affects the force of gravity between objects check that alpply

B). How many mole of mercury (Hg) would be produced from reacting 6 mole of Hgo (mercury (II) oxide) ?

Describe how the properties of water allow cats to drink in this fashion, including how water's molecular structure contribute to this process

If the pH of a solution is 9, the solution is A. acidic, which turns phenolphthalein pink B. acidic, which turns phenolphthalein colorless C. basic, which turns phenolphthalein pink D. basic, which turns phenolphthalein colorless

Who is Robert Hooke?

How old is a fossil that has radioactivity decayed through 4 half-lives of carbon - 14?