$$\text{NaCl} + \text{H}_2\text{O}$$

$$\text{AgNO}_3 + \text{NaCl} \rightarrow \text{AgCl} + \text{NaNO}_3$$

Question 1

Which element below has the most metallic character based on periodic table trends?

Accepted Answer

Na

Question 2

What is the number of valence electrons in phosphorus (P)?

Accepted Answer

5

Question 3

Which element has the larger atomic radius: Mg or Ca?

Accepted Answer

Ca

Question 4

Which element has the higher ionization energy: K or Na?

Accepted Answer

Na

Question 5

What is the complete electron configuration for the ion $$	ext{Cl}^-$$?

Accepted Answer

$$1s^2$$\ $$2s^2$$\ $$2p^6$$\ $$3s^2$$\ $$3p^6$$

Question 6

What is the chemical formula for ammonium sulfate?

Accepted Answer

$$(	ext{NH}_4)_2	ext{SO}_4$$

Question 7

What is the systematic name for $$	ext{Na}_2	ext{CO}_3$$?

Accepted Answer

Sodium carbonate

Question 8

Classify the following reaction: $$	ext{2Na} + 2H_2O ightarrow 2NaOH + H_2$

Accepted Answer

Single displacement

Question 9

Which of the following metals reacts with water at room temperature?

Accepted Answer

Na

Question 10

Which compound is soluble in water according to the solubility rules?

Accepted Answer

$$	ext{NaNO}_3$$

Question 11

Complete and balance the following neutralization reaction: $$	ext{HCl} + 	ext{NaOH} ightarrow$$

Accepted Answer

$$	ext{NaCl} + 	ext{H}_2	ext{O}$$

Question 12

Which of the following compounds is insoluble in water?

Accepted Answer

$$	ext{CaSO}_4$$

Question 13

What is the formula for hydrogen carbonate (bicarbonate)?

Accepted Answer

$$	ext{HCO}_3^-$$

Question 14

Which of the following ions is present in potassium chromate?

Accepted Answer

$$	ext{CrO}_4$$^{2-}$$

Question 15

Predict whether a reaction occurs when $$	ext{AgNO}_3 is $$mixed with $$	ext{NaCl} in $$water.

Accepted Answer

A reaction occurs and a precipitate forms

Question 16

Which of the following is the correct electron dot formula for oxygen?

Accepted Answer

O with six dots around it

Question 17

Which of the following is the correct formula for perchlorate ion?

Accepted Answer

$$	ext{ClO}_4^-$$

Question 18

Which of the following is a double displacement reaction?

Accepted Answer

$$	ext{AgNO}_3 + 	ext{NaCl} ightarrow 	ext{AgCl} + 	ext{NaNO}_3$$

Question 19

Which of the following ions is generally insoluble in water except with alkali metals or ammonium?

Accepted Answer

$$	ext{CO}_3$$^{2-}$$

Intro to Chemistry Study Guide: Periodic Table, Compounds, and Reactions

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