Atoms & Elements

Front

Which of the following best describes an atom? Options: protons and neutrons grouped together, protons and electrons grouped together, a core (center) of protons and neutrons surrounded by electrons, a core of electrons and neutrons surrounded by protons

Back

a core (center) of protons and neutrons surrounded by electrons

Front

Which of the following is found farthest from the center of an atom? Options: nucleus, proton, neutron, electron

Back

electron

Front

Which of the following atoms has 14 electrons? Options: Carbon (C), Silicon (Si), Sulfur (S), Argon (Ar)

Back

Silicon (Si)

Front

Which statement best describes the part of the atom that is shown by the letter B?

Back

It is a neutron, and it has a neutral charge.

Front

Cobalt (Co) has 27 protons in each atom. Which of the following also describes an atom of Cobalt? Options: It has no neutrons., It has 27 electrons., It has 13 neutrons and 14 electrons., It has a total of 86 neutrons and electrons.

Back

It has 27 electrons.

Front

Manganese has an atomic mass of 55 and an atomic number of 25. What does this information reveal about most phosphorus atoms?

Back

They contain more neutrons than protons.

Front

Number and location of protons in a Sulfur atom (S)? Options: 32 protons, located in the nucleus, 16 protons, located in the nucleus, 32 protons, located outside the nucleus, 16 protons, located outside the nucleus

Back

16 protons, located in the nucleus

Front

Iodine (I) has 53 electrons in each atom. Based on this information, which of the following also describes an atom of silver? Options: It has 53 neutrons., It has 53 protons., It has 27 neutrons and 26 electrons., It has a total of 180 neutrons and electrons.

Back

It has 53 protons.

Front

An element with an atomic number of 37 and an atomic mass of 85 has how many neutrons in each atom?

Back

The number of neutrons is calculated by subtracting the atomic number from the atomic mass, which gives 85 - 37 = 48.

Front

What makes an atom have a positive charge?

Back

more protons than electrons