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Sciences formative criterion A

Last updated about 5 years ago

14 questions

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Question 1

1.

An atom has equal number of ..........

Protons and neutorns 

Potons and electrons 

Neutrons and electrons 

All particles are equal 

Question 2

2.

What is the electronic distribution of Oxygen ,atomic number is 8

2,4,4

2,3,3

2,6

8

Question 3

3.

What kind of change is happening in melting ice

Chemcial change 

Physical change 

Endothermic 

Exothermic 

Question 4

4.

Elements are arranged as follows in the reactivity series Magnesium ,Aluminum ,Silver

Silver can replace mahgemsium in its compounds 

Alumiunum can replace Silver in its compunds 

Silver can replace both Magnesium and Aluminum 

Magnesium cant replce any of them 

Question 5

5.

Sulphur is an elemntent that has atomic number of 16 , Which ion will it form

Positive ion 

Negative ion 

Non of them 

Question 6

6.

What is an ion ?

Question 7

7.

What is a physical change ?

Question 8

8.

what is reactivity series ?

Question 9

9.

What is a chemcial reaction ?

Question 10

10.

Why an atom is electrically neutral ?

Question 11

11.

Answer the follwoing questiosn

Question 12

12.

Answer the follwoing question

Question 13

13.

Answer the follwoing question

Question 14

14.

Answer the follwoing question