ACIDS
WORKSHEET
Warm - up
1. What do you know about acids?
2. Could you write a short definition?
3. Translate the following expressions / words:
pH-scale
pH value
solution
neutral
basic
hydrogen / hydrogen ion
concentration
acidic
basic
alkaline
strength (of acid)
by Aleksandra Lenard
I Liceum Ogólnokształcące im. T. Kościuszki w Koninie
ACIDS
WORKSHEET
Animation: What is pH?
● Watch the animation and complete the gaps.
1. A scale for measuring ………………………………………………….
concentration in a solution, called pH scale has been developed.
2. On the pH scale we can measure pH from 0
……………………………………. to 14 very alkaline.
3. pH can be considered as a number which indicates the acidic or basic
nature of …………………....………
4. Higher the hydronium ion ………………………………….., lower is the pH
value.
5. The pH of a ……………………………… solution is 7.
6. Values less than 7 on pH scale represent an acidic solution.
7. As the pH value increases from 7 to 14, it represents an increase in OH​ion concentration in the solution, that is increase in the
…..…………………. of alkali.
by Aleksandra Lenard
I Liceum Ogólnokształcące im. T. Kościuszki w Koninie
ACIDS
WORKSHEET
Valency in acids
●
Match the radical in each acid, then fill a table.
FORMULA
VALENCY OF
ACID RADICALS
FORMULA
VALENCY OF
CENTRAL
ATOMS
NAME OF ACID
H​2SO​
​
4
H​2SO​
​
4
1
HNO​3
HNO​3
2
H​3​PO​4
H​3​PO​4
3
HClO​4
HClO​4
4
H​2CO​
​
3
H​2CO​
​
3
5
HCl
HCl
6
by Aleksandra Lenard
I Liceum Ogólnokształcące im. T. Kościuszki w Koninie
ACIDS
WORKSHEET
The name of acids
Fill a table according to the example. Choose the names of acids from the
undermentioned list:
●
trioxosulfuric(IV) acid / hydroiodic acid / dioxonitric(III) acid /
tetraoxochloric(VII) acid / carbonic acid / hydrosulfuric acid / trioxonitric(V) acid
(nitric acid)
The formula of acid
The name of acid
1
HCl
Hydrochloric acid
2
HI
3
H​2​S
4
H​2CO
​3
​
5
HNO​2
6
HNO​3
7
H​2SO
​3
​
by Aleksandra Lenard
I Liceum Ogólnokształcące im. T. Kościuszki w Koninie
ACIDS
WORKSHEET
8
H​2SO
​4
​
9
HClO​4
Tetraoxosulfuric(VI) acid
Classification of acids
a) Give the Polish name to English names of the acids groups.
●
b) Choose two examples of acids and match them to a correct group.
The given acid may belong to some groups.
●
HCl / HClO​4​ / H​2​CO​3​ / HI / H​2​S / HNO​3​ / HNO​2​ / H​2​SO​4​ ​(stęż.)​ / H​2​SO​4 (rozc.)​ /
H​2​SO​3​ /
oxoacids
hydracids/binary acids
monoprotic acids
polyprotic acids
weak acids
strong acids
oxidizig acids
non-oxidizing acids
by Aleksandra Lenard
I Liceum Ogólnokształcące im. T. Kościuszki w Koninie
ACIDS
WORKSHEET
stable acids
by Aleksandra Lenard
I Liceum Ogólnokształcące im. T. Kościuszki w Koninie
instable acids