Physical Science - 3rd Qtr Quiz No. 1

This is the Periodic Table of Elements. In what category does the encircled atom/element belong?

• Metal

• Metalloid

• Nonmetal

In aluminum chloride (AlCl₃), there is a transfer of electron from the aluminum to the chlorine. Therefore, this is a combination of _______ [and] _______ atoms.

• metal and nonmetal atoms

• two nonmetal atoms

• two metal atoms

In carbon tetrachloride (CCl₄), there is a sharing of electrons between carbon and chlorine. Therefore, this is a combination of _______ [and] _______ atoms.

• metal and nonmetal atoms

• two metal atoms

• two nonmetal atoms

Polarity in chemical bonding is the distribution of electrical charge over the atoms joined by the bond.

In this case, there is an equal sharing of electrons in the atoms present in the polar molecule.

• Both statements are true.

• Both statements are false.

• The first statement is true and the second statement is false.

• The first statement is false and the second statement is true.

This factor in determining the polarity of molecules measures the relative tendency of an atom to attract electrons to itself when chemically combined with other atom.

• Electronegativity

• Molecular Geometry

The image shown is a water molecule (H₂O). The oxygen atom in this molecule is more electronegative than the two hydrogen atoms.

• Both statements are true.

• Both statements are false.

• The first statement is true and the second statement is false.

• The first statement is false and the second statement is true.

Sulfur (S) has an EN value of 2.5 and Oxygen (O) has an EN value of 3.5. The EN difference between S and O is 1.0 and the type of chemical bond present between the two is ______.

• Ionic bond

• Polar Covalent Bond

• Nonpolar Covalent Bond

Calcium (Ca) has an EN value of 1.0 and Chlorine (Cl) has an EN value of 3.0. The EN difference between Ca and Cl is 2.0 and the type of chemical bond present between the two is ______.

• Ionic Bond

• Polar Covalent Bond

• Nonpolar Covalent Bond

This is an acetone molecule. The red arrow in the picture points to what kind of force/s of attraction?

• Intermolecular Forces of Attraction

• Intramolecular Forces of Attraction

Giveaway Question!

The delta-positive symbol shown in the picture indicates an atom which is ______.

• Partially Positive

• Partially Negative