The first system of classification of organisms was developed by?

1. Darwin

2. Linnaeus

3. Watson

4. Mendel

If a 273g of a material displaced 26 mL of water, what is its density?

An atom has 9 electrons and 9 protons at the start. If it loses 2 electrons, the net charge on the atom will be? If the atom instead gains 4 electrons the net charge will be?

Which of the following correctly describes a property of an atom? it has more protons than neutrons it has a negative or positive charge it has an equal number of protons and electrons it has an equal number of neutrons and electrons

In the following atomic model, where does the strong nuclear force happen? A diagram of an atom has three rings, labeled from outside to inside A, B, and C. A and B each carry two electrons. Inside ring C are 4 protons and 5 neutrons.

If you combine solutions of metal cations with various anion solutions. Based on what you know about soubility rules for which of the following combinations do you expect to observe the formation of a precipitate? Select all that apply. a.

Why are noble metals for example Rhodium, Palladium, Platinum, and Iridium largely used in chemical manufacturing as heterogeneous catalyst?

If displacement is decreasing, then velocity is:

True or false an example of a theory is Newton's theory of gravity

What is a molecule with atoms from two or more different elements?

How do you find the percent composition of CuBr2