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प्रश्न
Write the names of elements from the following symbol:
Ir
उत्तर
Ir- Iridium
संबंधित प्रश्न
Is food that we eat a mixture ?
Give one use of the following substance:
Iron
Give one use of the following substance:
Coal
Fill in the blank
A liquid non-metal is _______.
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
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.
State four differences between – elements, compounds and mixtures with suitable examples.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
Matter is its simplest form is called ______.
