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प्रश्न
Indicate whether the following statement is true or false:
Elements are made up of compounds
विकल्प
True
False
उत्तर
False
Correct Statement: Elements are made up of atoms.
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संबंधित प्रश्न
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Give two examples of Metalloids.
Give two examples of the following.
Inert gases
Name: Three different forms of carbon
Find the atomicity of the Following molecule:
Calcium Chloride
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
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.
There are ______ number of known elements.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
Name the two elements which are derived from the country.
