CP- L End of Unit Review

CP- L End of Unit Review

Ms. Bailey*

​Title: Chemical Properties Justifications

1. Name , Number , date and Period in the TOP right corner​

Multiple Choice

How many protons, neutrons and electrons are present in an atom of hafnium, Hf, with a mass number of 178?

• 72 protons, 178 neutrons, 106 electrons

• 72 protons, 106 neutrons, 72 electrons

• 178 protons, 250 neutrons, 72 electrons

• 106 protons, 72 neutrons, 106 electrons

Multiple Choice

Based on the data, which periodic table shows the correct location of the four elements?

​Which two atoms are of elements in the same group in the periodic table?

Multiple Choice

Which two atoms are of elements in the same group in the periodic table?

• atom one and two

• atom one and four

• atom two and three

• atom three and four

Multiple Choice

Aluminum, sulfur, and chlorine are elements found on the periodic table. Tests involving these three elements would show that at normal room temperature —

• sulfur is malleable and aluminum conducts electricity

• chlorine is malleable and conducts electricity

• aluminum is malleable and conducts electricity

• all three elements are malleable and conduct electricity

​Based on these observations, which sample is most likely a metal?

Multiple Choice

Based on these observations, which sample is most likely a metal?

• Sample 1 only

• Samples 1 and 2 only

• Samples 2, 3 and 4

• Sample 3 and 4 only

Multiple Choice

Tin, Sn, is a soft white metal. It has a low melting point compared with other metals. Tin is widely used as a coating for cans of food. Which statement accurately describes atoms of tin?

• Tin atoms have 50 protons.

• Tin atoms have five valence electrons.

• Tin atoms have 119 neutrons.

• Tin atoms have 68 electrons.

​Four students were asked to name the parts of an atom that determine the atom’s identity and chemical properties. The students’ responses are shown in the table below.

​

Which student’s responses are correct?

Multiple Choice

Four students were asked to name the parts of an atom that determine the atom’s identity and chemical properties. The students’ responses are shown in the table below. Which student’s responses are correct?

• student one

• student two

• student three

• student four

​

Based on the information in the table, which conclusion about the chemical reactivity of these elements is valid?

Multiple Choice

Based on the information in the table, which conclusion about the chemical reactivity of these elements is valid?

• Boron is the most reactive because it has the most protons.

• Fluorine is the most reactive because it has 7 electrons in the outer shell.

• Silicon is the most reactive because it has an equal number of protons and neutrons.

• Gallium is the most reactive because it has many more neutrons than protons.

Multiple Choice

How many atoms are represented in the reactants of this equation?

• 6

• 12

• 24

• 36

​Alright! Well hopefully you paid attention during our review. We will have our test tomorrow. If you are absent tomorrow, remember all lessons are posted in GC... BUT they close at 9pm.

NO EXCEPTIONS!!!