the atomic number of an atom is

• the mass of the atom

• the number of protons added to the number of neutrons

• the number of protons

• negatively charged

The mass number of an atom is

• the average mass of all the isotopes of the element

• a measure of the density of that element

• the number of protons added to the number of neutrons

• the number of protons in the atom of the element

The average atomic mass of an element is

• the average mass of all the isotopes of the element

• a measure of the density of that element

• the number of protons and electrons in the atoms of the element

• the number of protons in the atom of the element

What is the atomic number of an atom that has 12 protons, 12 electrons, and 13 neutrons?

• 6

• 12

• 13

• 25

Tags

NGSS.MS-PS1-1

What is the mass number of an atom that has 12 protons, 12 electrons, and 13 neutrons?

• 6

• 12

• 13

• 25

What is name of an atom that has 12 protons, 12 electrons, and 13 neutrons?

• Carbon (C)

• Magnesium (Mg)

• Aluminum (Al)

• Manganese (Mn)

Tags

NGSS.MS-PS1-1

What is/are the differences between Hydrogen - 1 and Hydrogen - 2?

• Hydrogen - 1 is heavier than Hydrogen - 2

• Hydrogen - 2 has one more neutron than Hydrogen - 1

• They have different number of protons

• All of the above are different

Which of the following would change carbon into another isotope?

• Add or remove a neutron

• add or remove a proton

• add or remove a valence electron

• add or remove an ion

Which of the following would change carbon into another atom?

• add or remove a neutron

• add or remove a proton

• add or remove a proton

• add or remove an ion

Tags

NGSS.HS-PS1-8

Which of the following would change oxygen into an ion?

• Add or remove a neutron

• add or remove a proton

• add or remove a valence electron

• add or remove an ion

Tags

NGSS.HS-PS1-1