Download App

Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom2 Marks
Question
What is an electron? State its relative mass and charge.
✓

Answer

Electron is a negatively charged particle found in the atoms of all elements.
The relative mass of an electron is $\frac{1}{1840\text{u}}$
A charge of $-1$ is carried by an electron.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 2 Mark )" from Structure of the Atom→Structure of the Atom — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

How will the magnitude of buoyancy exerted by a liquid change if its volume is doubled?
→
Verify by calculating that:
$5$ moles of $\mathrm{CO}_2$ and $5$ moles of $\mathrm{H}_2 \mathrm{O}$ do not have the same mass.
→
What is the name of the clear liquid formed when a solid dissolves in a liquid?
→
State any two conditions essential for being free of disease.
→
Give two main sources of carbon.
→
What is the importance of tissues?
→
Which types of ribosomes are found in prokaryotes and eukaryotes?
→
What is meant by the quality (or timbre) of sound? On what factor does the quality (or timbre) of a sound depend?
→
The power of a motor pump is $2 kW$ . How much water per minute the pump can raise to a height of $10 m$ ? (Given $g =$
$\left.10 ms^{-2}\right)$
→
Compare an electron and a proton in respect of mass and charge.
→