Advertisements
Advertisements
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Concept: undefined >> undefined
Complete the statement given below by filling in the blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Concept: undefined >> undefined
Advertisements
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Concept: undefined >> undefined
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
Concept: undefined >> undefined
Complete the statement given below by filling in the blank with the correct word.
Element ______ has the symbol derived from its Latin name ‘Argentum’
Concept: undefined >> undefined
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
Concept: undefined >> undefined
Complete the statement given below by filling in the blank with the correct word.
From the elements nitrogen, chlorine, bromine, the element present in the atmosphere is ________.
Concept: undefined >> undefined
Match the statements in List I – 1 to 10 correct answers in List II-A to J.
| List I | LIst II | ||
| 1 | Fluorine and chlorine | A | Nitrogen |
| 2 | A diatomic molecule | B | Boron |
| 3 | A molecule containing the elements hydrogen and oxygen. | C | Reactants |
| 4 | A metalloid - showing properties of both metals and non-metals. | D | Chemical Formula |
| 5 | The term used for the substances which take part in the chemical reaction | E | Halogens |
| 6 | The term represents a substance by means of symbols. | F | Water |
| 7 | The term used for the substances formed as a result of a chemical reaction | G | Nitric Acid |
| 8 | A compound containing one atom of zinc and two atoms of chlorine. | H | Products |
| 9 | The chemical name for nitrogen monoxide. | I | Phosphorus |
| 10 | A polyatomic molecule. | J | Zinc Chloride |
Concept: undefined >> undefined
Select the correct answer from the choice given below.
The type of molecule- bromine
Concept: undefined >> undefined
Select the correct answer from the choice given below.
The unreactive non-metallic element
Concept: undefined >> undefined
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Concept: undefined >> undefined
Select the correct answer from the choice given below.
The element which is malleable
Concept: undefined >> undefined
Select the correct answer from the choice given below.
An impure substance
Concept: undefined >> undefined
Select the correct answer from the choice given below.
An element which is a poor conductor of heat
Concept: undefined >> undefined
Select the correct answer from the choice given below.
A group of atoms of elements
Concept: undefined >> undefined
Match the compounds in List I – 1 to 20 with their correct formulas from in List II-A to T.
| List I | List II | ||
| 1 | Hydrochloric acid | A | NaCI |
| 2 | Potassium Hydroxide | B | NaOH |
| 3 | Sulphuric Acid | C | KCI |
| 4 | Zinc Hydroxide | D | Ca(OH)2 |
| 5 | Sodium Chloride | E | CaS |
| 6 | Nitric Acid | F | CuSO4 |
| 7 | Calcium Hydroxide | G | CaCO3 |
| 8 | Carbonic Acid | H | NH4CI |
| 9 | Sodium hydroxide | I | HCI |
| 10 | Copper sulphate | J | ZnO |
| 11 | Potassium Chloride | K | HNO3 |
| 12 | Calcium Carbonate | L | H2CO3 |
| 13 | Magnesium Sulphide | M | MgS |
| 14 | Zinc Sulphate | N | MgO |
| 15 | aluminium Hydroxide | O | KOH |
| 16 | Sodium Carbonate | P | ZnSO4 |
| 17 | Calcium Sulphide | Q | Na2CO3 |
| 18 | Magnesium Oxide | R | H2SO4 |
| 19 | Zinc Oxide | S | AI(OH)3 |
| 20 | Ammonium Chloride | T | Zn(OH)2 |
Concept: undefined >> undefined
What are the two main types of matter?
Concept: undefined >> undefined
Give two examples for each type of matter
Concept: undefined >> undefined
Differentiate between living and non-living matter.
Concept: undefined >> undefined
