Period 2 IS4T1 Exam #1

What type of bonds are shown below?

• Ionic

• Polar Covalent

• Nonpolar covalent

• There is not enough information to determine the answer.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What type of bond will result if the atoms below combine? The electronegativity of each atom is given.

• Nonpolar covalen

• Polar covalent

• There is not enough information to determine the answer.

• Ionic

Tags

NGSS.HS-PS1-2

Which of the following statements is true about the molecule shown below?

• The bonds are nonpolar and the molecule is polar.

• The bonds are polar and the molecule is nonpolar.

• The bonds are nonpolar and the molecule is nonpolar.

• The bonds are polar and the molecule is polar.

The image shows a mixture of polar and nonpolar molecules. What type of intermolecular force is shown by the dashed yellow line?

• London dispersion

• Dipole-dipole

• Dipole-induced dipole

• Ionic

The image shows a pure substance that contains one type of molecule. What type of intermolecular force is represented by the dashed yellow line?

• Dipole-induced dipole

• London dispersion

• Ionic

• Dipole-dipole

What ion will be formed by the selenium atom shown above when it has a stable set of valence electrons?

• Se6+

• Se2+

• Se6-

• Se2-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is the best description of how electrons are transferred in an ionic bond?

• A metal atom gains electrons and a nonmetal atom loses electrons.

• A metal atom loses electrons and a nonmetal atom gains electrons.

• A metal and a nonmetal atom lose electrons.

• A metal and a nonmetal atom gain electrons.

Tags

NGSS.HS-PS1-2

A user is constructing an ionic bond between beryllium and chlorine and has reached the stage above. What should the user do next?

• Transfer an electron from the beryllium atom to the chlorine atom.

• Transfer an electron from the chlorine atom to the beryllium atom.

• Add another beryllium atom.

• Add another chlorine atom.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-1

Lithium nitride has the chemical formula Li3N. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?

• RbN

• RbN3

• Rb3N

• Rb2N3

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2