Sciences formative criterion A

Last updated over 5 years ago

14 questions

1

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

Protons and neutorns 

Potons and electrons 

Neutrons and electrons 

All particles are equal 

2,4,4

2,3,3

2,6

8

Chemcial change 

Physical change 

Endothermic 

Exothermic 

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 

Positive ion 

Negative ion 

Non of them 

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

Protons and neutorns 

Potons and electrons 

Neutrons and electrons 

All particles are equal 

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

2,4,4

2,3,3

2,6

8

What kind of change is happening in melting ice 

Chemcial change 

Physical change 

Endothermic 

Exothermic 

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 

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

Positive ion 

Negative ion 

Non of them 