Download App

chemical reactions and equations — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Sciencechemical reactions and equations3 Marks
Question
What is meant by unbalanced chemical equation ?
✓

Answer

  • Chemical equation is written more concisely by using chemical formulae instead of words, then such equation is called unbalanced equation.
  • For example, $Mg + O_2→ MgO$
  • In the above equation, mass and number of atoms are not same on both side.
  • Hence, this is an unbalanced chemical equation.
  • It is also called skeletal chemical equation for the burning of magnesium in air.

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 "[3 Mark Questions]" from chemical reactions and equations→chemical reactions and equations — all question types→Science STD 10 question papers→Gujarat Board STD 10 question papers→Gujarat Board question paper generator→

Similar questions

Explain Vegetative Propagation in detail.
→
What is meant by combination reaction? Explain it with a suitable example.
→
Give scientific reason:
The wall of the artery is thick and elastic while that of vein is relatively thin.
→
How autotrophs meet their requirement of raw materials?
→
Give an example of ‘Natural Spectrum’. Explain the formation of a rainbow in sky with a neat labelled diagram.
→
Draw the structural formula of ethene.
→
State the exceptions of metallic and non-metallic elements.
→
Write a note on 'alloy'.
→
How does the design of the body solve a problem when immediate response is needed? Where should such connection be made?
→
Give scientific reason:
Contraceptive pills are helpful to prevent pregnancy.
→