Mid-Term Chemistry AHS

Pick the correct answer.

• Halogen

• Alkali Metal

• Alkali Earth Metals

• Noble Gases

What is the correct answer?

• SO3

• XeO4

• OF2

• CO

Pick the correct answer

• Magnesium, Strontium, Barium

• Rubidium, yttrium, zirconium

• Cadmium, calcium, carbon

• Nitrogen, sulfur, bromine

Describe the wavelength as you move left to right on the grap

• The wavelength decreases and energy increases

• The wavelength stays the same but the energy increases

• The wavelength increases but the energy decreases

• The wavelength decreases and the energy decreases

Which of the following is not one of the postulates of the kinetic molecular theory for ideal gases?

• The particle size is very small compared to the space between the particles.

• The particles are in constant random motion.

• The collisions between particles are elastic.

• The particles attract and then repel each other.

The reactivity trends on the Periodic Table depend on valence electrons. What group (family) on the

Periodic Table is identified as the most reactive nonmetals? And which group is the most reactive metal group (1A)?

• Halogens and Alkali metals

• Alkali earth metals and Nonmetals

• Halogens and Noble Gases

• Halogens and Alkali Earth Metals

What characteristic is responsible for the high electrical conductivity of a metal?

• Free floating electrons

• Strong bond between metallic ions

• Ions are displaced easily in the lattice

• Electrostatic attractive force between two atoms

Which of the following statements is related to a postulate (assumption) of the kinetic molecular

theory of gases?

• Which of the following statements is related to a postulate (assumption) of the kinetic molecular

  theory of gases?

• Gas particles are in constant motion, giving them a large amount of potential energy.

• Gas particles are in constant motion because they are strongly attracted to each other.

• Gas particles

  are in constant motion and are very far apart compared to their size.

Alkali metals react very readily with halogens and form ionic compounds such as table salt (NaCl)

and many others. Which of the following explanations most completely describes why these two

groups (families) of elements react readily?

• The alkali metals have one valence electron, and the halogens are one short of an octet.

• Alkali metals are negative and halogens are positive, so they attract each other.

• Alkali metals and halogens can very easily share eight valence electrons between them.

• The halogens very easily donate valence electrons to the alkali metals so that all have eight. 

What is the volume of 1 mole of gas at Standard Temperature and Pressure (STP)? 

• 2.4 L  

• .24 L 

• .024 L 

• 22.4 L