Chemistry

What is the name of an atom that gained an electron?

• cation

• anion

• isotope

• isomer

What is the name of an atom that lost an electron?

• anion

• isotope

• cation

• isomer

What is the name of an atom in which the neutron number has changed?

• ion

• molecule

• element

• isotope

Tags

NGSS.HS-PS1-8

How is the atomic number of an element determined?

• The atomic number is determined by the number of electrons in an atom.
• The atomic number is based on the element's row in the periodic table.

• The atomic number is defined by the total number of neutrons in an atom.
• The atomic number is determined by the number of protons in an atom's nucleus.

How is the mass number of an atom determined?

• The mass number is the total number of electrons in an atom.
• The mass number is the sum of protons and neutrons in the nucleus.
• The mass number is the the total number of protons in an atom.

• The mass number is the sum of protons and electrons.

If an element has an atomic # of 11 and an atomic mass 23, then the number of protons is ___, the number of neutrons is ___, and the number of electrons is ___.

• 12; 11; 12

• 10; 13; 10

• 11; 10; 12

• 11; 12; 11

If two atoms share electrons, and there is a significant difference in their electronegativities, what type of bond results?

• Nonpolar covalent bond
• Ionic bond
• Polar covalent bond
• Hydrogen bond

If two atoms share electrons, and there is a only a small difference in their electronegativities, what type of bond results?

• Polar covalent bond

• Hydrogen bond
• Nonpolar covalent bond

• Ionic bond

If one atom transfers electrons to another atom, and the two resulting charged atoms become electrically attracted (positive to negative), what type of bond results?

• Hydrogen bond
• Ionic bond
• Polar covalent bond

• Nonpolar covalent bond

Tags

NGSS.HS-PS1-3

If the partially positive hydrogen of one water molecule is attracted to the partially negative oxygen of a different water molecule, what type of bond is this?

• Ionic bond
• Polar covalent bond

• Hydrogen bond
• Nonpolar covalent bond