L12 2-8 class

L12 2-8 class​

By Connor Boyd

​Have out Periodic table

​

Have tabs open for

• Ptable resource

• Lesson 12 SAS​

​Both can be found in agenda

Multiple Choice

Which end of the water molecule has a slightly positive charge?

• the oxygen end
• the hydrogen end
• both ends are slightly positive
• neither end is positive

Multiple Choice

Which of the following is LEAST likely to dissolve in water?

• nonpolar fats and oils
• polar sugar molecules
• salt made of a positive sodium ion and a negative chloride ion
• all of the substances will dissolve easily in water

Multiple Choice

Large bodies of water do not quickly fluctuate in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Multiple Choice

What is the molecular shape of water? Why is it important for life?

• Bent; makes it polar

• Linear; makes it polar

• Bent; allows for ionic bonding

• Linear; allows for ionic bonding

​Question 6A: complete the table using information found on the Ptable source

​Property	​Compound 1: Lithium oxide	​Compound 2: Hydrogen Sulfide
​Melting point	​	​
​Boiling point	​	​
​Ability to act as solvent	​	​
​Conductivity	​	​
​Shape	​	​
​Type of bonding	​	​
​Toxicity/safety	​	​

​Fill remaining rows with properties of your choosing

Multiple Choice

The melting point of Lithium Oxide is  _ $$\degree C$$   

• 100

• 2600

• 1438

• -82

Multiple Choice

What is the molecular shape of $$H_2S$$  

• Tetrahedral

• Trigonal Planar

• Bent

• Linear

​6b, 6c, 6d

​6b - similarities to water: Think about the shape? Ability to act as a solvent

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​6c - What has a stronger attraction. A compound that is a gas at room temperature or a compound that is a solid?

​

6d - Think of what we know about charges and attractions. ​

​Discuss question 8 with your group

​

Fill out the table for question 9​

Multiple Choice

$$Li_2O$$  would be in what state on a Goldilocks planet?

• Solid

• Liquid

• Gas

Multiple Select

In our solar system Hydrogen sulfide $$\left(H_2S\right)$$  are which of the following?

• Solid

• Liquid

• Gas

Poll

Do you think it is possible for Hydrogen Sulfide $$\left(H_2S\right)$$  to support life?

• Yes

• No