Flashcards For Exam

Question 1

Dilute acid can help detect

Answer 1

Carbonates

Question 2

Carbonates are substance that contain

Answer 2

CO32- ions

Question 3

Test for carbonates

Answer 3

-use a dropping pipette to add a few drops of dilute acid to a test tube containing your mystery substance
-connect this test tube containing limewater

Question 4

Result for carbonates

Answer 4

If carbonates are present, the reaction will release carbon dioxide which will turn the limewater cloudy when it bubbles through it

Question 5

HCI and barium chloride can help detect

Answer 5

Sulfates

Question 6

Test for sulfates

Answer 6

-Use a dropping pipette to add drops of dilute hydrochloric acid
-followed by a couple of drops of barium chloride solution to a test tube containing your mystery solution

Question 7

Results for sulfates

Answer 7

A white precipitate of barium sulfate will form

Question 8

Nitric acid and silver nitrate can be used to test for

Answer 8

Hallides

Question 9

Test for halides

Answer 9

Add a couple of drops of dilute nitric acid (HNO3) followed by a couple of drops of silver nitrate solution (AgNO3) to your mystery solution

Question 10

If chloride is present, it gives a

Answer 10

White precipitate of silver chloride

Question 11

If bromide is present, it gives a

Answer 11

Cream precipitate of silver iodide

Question 12

If iodide is present, it gives a

Answer 12

Yellow precipitate of silver iodide

Question 13

Flame tests identify

Answer 13

Metal ions

Question 14

Method for testing for metal ions

Answer 14

-clean a nichrome or platinum wire loop by rubbing with fine emery paper and then holding it in a blue flame from Bunsen burner
-The Bunsen burner might change color for a bit but once it’s blue again, the loop is clean
-dip the loop into the sample you want to test and put it back in the flame
Record the color of flame

Question 15

Lithium ions flame color

Answer 15

Crimson flame

Question 16

Sodium flame color

Answer 16

Yellow flame

Question 17

Potassium ions flame color

Answer 17

Lilac flame

Question 18

Calcium ions flame color

Answer 18

Orange red flame

Question 19

copper ions flame color

Answer 19

Green flame

Question 20

Calcium ions precipitate color

Answer 20

White

Question 21

Copper ions precipitate color

Answer 21

Blue

Question 22

Iron(II) ions precipitate color

Answer 22

Green

Question 23

Iron(III) ions precipitate color

Answer 23

Brown

Question 24

Aluminum ion precipitate color

Answer 24

White at first but then redissolves in NaOH to form a colorless solution

Question 25

Magnesium ions precipitate color

Answer 25

White

Question 26

Test for chlorine

Answer 26

Bleaches damp litmus paper, turning it white

Question 27

Test for oxygen

Answer 27

If you put a glowing splint inside a test tube containing oxygen will relight a glowing splint

Question 28

Test for carbon dioxide

Answer 28

Bubbling carbon dioxide through an aqueous solution of calcium hydroxide (limewater) causes the solution to turn cloudy

Question 29

Hydrogen

Answer 29

Hold a burning splint at the open end of a test tube containing hydrogen, you’ll get a squeaky pop