Which of the following are transferred or shared when two atoms react chemically?

Looking at a model of the atom, particles located within the nucleus that are positively charged are called

Looking at a model of the atom, particles located within the nucleus that have a no charge are called

Protons and neutrons together are known as

The number of protons in a neutral atom is equal to the number of

Cobalt (atomic number 27) is necessary for growth and is present in vitamin B12. The only naturally occurring isotope of the element cobalt has a mass number of 59. How many neutrons are in cobalt?

Calcium (atomic number 40) is an element needed for the development of bones and teeth in humans. How many electrons does a neutral atom of calcium contain?

In the Bohr model of the atom, electrons are

The overall charge on an electron is

The overall charge on a neutron is

The overall charge when one electron and one proton are present in an atom is

The overall charge on a proton is

The overall charge when an atom contains one proton and one neutron is

The overall charge on an atom with 2 electrons, 3 protons, and 3 neutrons is

Which of the following is the SMALLEST of the sub-atomic particles?

Which of the following are most similar in mass?

The mass number of an element is the total number of protons and neutrons located in the nucleus. If carbon has an atomic number of 6 and a mass number of 12, how many neutrons does it contain?

If the mass number of an element is the total number of protons and neutrons located in the nucleus, how many protons does chlorine have if its atomic number is 17 and its mass number is 35?

The substance sodium is abundant in the ocean as an ion dissolved in water. In order for an atom to become an ion which of the following needs to occur?

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