Fall 24 2nd Block Midterm

A mutual attraction between nuclei and valence electrons between different atoms is

• Dipole
• Lewis structures
• Chemical bond
• London force

The ions in most ionic compounds are organized into a

• molecule
• polyatomic ion
• Lewis structure
• crystal

Choose the correct shape for this molecule:

• Bent
• Tetrahedral
• Linear
• Trigonal pyramidal

In metallic bonds, the mobile electrons surrounding the positive ions are called a(n)

• Lewis structure
• electron cloud
• sea of electrons
• dipole

VSEPR theory is a model for predicting

• strength of metallic bonds
• lattice energy values
• the shape of molecules
• ionization energy

The shape of an AB₆ molecule is

• trigonal-planar
• linear
• tetrahedral
• octahedral

It has a fixed volume and has no definite shape.

• solid
• liquid
• gas
• plasma

Which of the following is a heterogeneous mixture?

• oxygen
• salt
• gatorade
• dirt and water

A compound is

• a substance, made of two or more atoms that are chemically bonded, that can be broken down into simpler, stable substances.
• any substance, whether it is chemically bonded or not.
• a substance that cannot be broken down into simpler, stable substances.
• the smallest unit of matter that maintains its chemical identity.

The symbol mm represents

• micrometer.
• millimeter.
• milliliter.
• meter.