Unit 5 - Chemical Equations And Acids, Bases Flashcards Preview

Chemistry in the Community - Kautz > Unit 5 - Chemical Equations And Acids, Bases > Flashcards

Flashcards in Unit 5 - Chemical Equations And Acids, Bases Deck (26)
Loading flashcards...
1

What is the term for a way to display chemical equations where every item is a WORD?

Word equation

2

What are the 4 types of evidence that a chemical equation has occurred?

~ Change in the color
~ Formation of a precipitate
~ Production of a gas
~ Energy is transferred - - gives off heat, light and sound

3

What is the SMALL whole-numbers that are placed in FRONT of the formulas in an equation in order to balance them?

Coefficients

4

What are the 7 Diatomic Elements?

Remember - “Have No Fear Of Ice Cold Beer”

Have - Hydrogen
No - Nitrogen
Fear - Fluorine
Of - Oxygen
Ice - Iodine
Cold - Chlorine
Beer - Bromine

5

Be able to name the 5 types of Chemical reaction.

~Synthesis (Combination)
~Decomposition
~Single-replacement
~Double-replacement
~Combustion

6

What type of reaction occurs when two or more substances react to form a SINGLE NEW SUBSTANCE?

2 Na + Cl2 ——> 2 NaCl

Synthesis (combination)

Hint: You combine the two substances to make ONE

7

What is the term for the type of reaction in which a single compound BREAKS down into two or more products?

2 H2O —-> 2 H2 + O2

Decomposition

Hint: Decomposition means to break down
So you are taking one product and breaking it into separate parts
1 reactant ——> 2 or more products

8

What type of reactions occurs when ONE element REPLACES a second element in a compound?

T + RS ——-> TS + R

Single replacement

Hint: You change the order (placement) of ONE element

9

What type of reaction occurs when a change involving the exchange of POSITIVE ions between TWO compounds?

RS + TU ——-> RU + TS

Double replacement

HINT: There are TWO reactants AND TWO products

10

What type of reaction occurs when one or more reactants combine with OXYGEN releasing heat or light?

A + O2 ——> AO

Combustion

HINT: Oxygen MUST be a reactant AND CO(2) MUST be in the product

11

What type of reaction is occurring in the following:

Na2S + Cd(NO3)2 ——-> CDS + NaNO3

Double replacement
(2 reactants and 2 products)

12

What type of reaction is occurring in the following:

Mg + O2 ——-> MgO

Synthesis (combination)

2 become 1

13

What type of reaction is occurring in the following:

Cu (NO3)2 + Zn ———> Zn(NO3)2 + Cu

Single replacement

Cu and Zn switch places

14

What type of reaction is occurring in the following:

2 C2H6 + 7 (O2) ——-> 4 CO2 + 6 H2O

Combustion

Reactant has O2 AND Product has CO2

15

What type of reaction is occurring in the following:

2 HgO ———-> 2 Hg + O

Decomposition

1 reactant breaks into 2 products

16

What are the 6 properties of an acid?

1 - sour taste
2 - Will corrode metals
3 - Electrolytes - which means they conduct electrical currents
4 - reacts with bases to form a salt and water
5 - pH is LESS than 7
6 - Turns litmus paper red

17

What are the 6 properties of Bases?

1 - Bitter/chalky taste
2 - Electrolytes - which means they conduct electrical currents
3 - Feels soapy or slippery
4 - Reacts with acids to form salts and water
5 - pH is GREATER than 7
6 - Turns litmus paper blue

18

Label the following as a weak acid or strong acid:

Nitric Acid - -
Acetic acid - -
Sulfuric acid - -
Hydrochloride acid - -
Phosphoric acid - -

Nitric Acid - - Strong
Acetic acid - - Weak
Sulfuric acid - - Strong
Hydrochloride acid - - Strong
Phosphoric acid - - Weak

19

What is the term for a substance that dissociates in water to produce hydrogen ions?

Arrhenius Acid

20

Determine if the following is a Monoprotic acid, a Diprotic acid or a Triprotic acid.

HNO3 - -
H3PO4 - -
H2CO3 - -

HNO3 - - Monoprotic acid
H3PO4 - -Triprotic acid
H2CO3 - - Diprotic acid

21

What is the measure of the acidity of a solution?

pH

22

What is the term for a substance that dissociates in water to produce hydroxide ions?

Arrhenius Base

23

What is the term for any substance that can donate hydrogen ions?

Bronstead-Lowry Acid

24

What is the term for a solution that changes color as the pH changes?

Indicator

25

What is the term for any substance that can accept hydrogen ions?

Bronstead-Lowry Base

26

Be able to balance equations

See Mrs. Krumpelman for help OR EXTRA PRACTICE SHEETS!!!