(1) Solid has definite ___________ and definite mass

(2) Pure substances have ___________ composition.

(3) Proton is a ___________ charged particle.

(4) Ca is the symbol of ___________.

(5) The symbol of gold is ___________.

(1) In a compound, constituents are present in definite proportion by mass.

(2) H is an example of a noble gas

(3) Hydrochloric acid is found in solid state

(4) Atoms are the building blocks of all matter.

(5) An ion carries positive or negative charge.

(1) Write a characteristic of solid.

(3) What is a metal? Give three examples.

(5) What is a molecule?

(2) Write the definitions of elements and compounds.

(4) What is a symbol?

(3) Which elements are generally found in living beings?

(4) Write the Latin name of– (a) Potassium (b) Sodium (c) Zinc

(1) Write two examples of a non-metal.

(2) Write any four characteristic of a non-metal.

(5) Write the symbols of the following elements (a) Boron (b) Silicon (c) Neon

(1) Identify each of the following as metal, non-metal or metalloid and write two uses of each.

(3) Write the names of elements which are found in the following compounds: (a) Sugar (b) Silica (c) Copper chloride

(2) Write any four characteristics of compounds

(4) Write the formula of (a) Ammonia (b) Glucose (c) Methane

all of them

Copper

both a and b

compound

Sugar

Copper