2. Atoms & Elements

Carbon has an atomic number of 6. What can you conclude about carbon from this fact?

Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?

Which term is defined as the sum of protons and neutrons in an atom?

In an electrically neutral atom the number of protons in the nucleus is equal to the number of?

The sum of the number of protons and neutrons in the nucleus of an atom is called the

Sodium's atomic number is 11. What does this tell you about an atom of sodium?

In which of these cases do we have enough information to say that the atom is electrically neutral?

The center of an atom is a dense region consisting of protons and neutrons called the

Which subatomic particle plays the greatest part in determining the properties of an element?

What is the mass number of a cobalt atom that has 27 protons and 30 neutrons?

Rounded to the nearest whole number, how many protons are in an atom of krypton? 36 48 84 120

Match each property to the appropriate subatomic particle. Drag each property into the correct bin.

An uncharged atom has six electrons. the nucleus of this atom must contain _______ protons.

Rounded to the nearest whole number, how many protons are in an atom of Krypton? 36 48 84 120

How many protons, neutrons, and electrons are there in a neutral atom of ³⁰P (phosphorus-30)?