Chemistry
Grade-10
Easy
Question
A chemical change is different from a physical change because in a chemical change
- Chemicals are used
- Molecules do not physically touch
- A new substance is formed, and in a physical change, no new substance is formed
- The change can be seen, but in a physical change, it cannot
Hint:
new substance is formed, and in a physical change, no new substance is formed.
The correct answer is: A new substance is formed, and in a physical change, no new substance is formed
A chemical change is different from a physical change because in a chemical change a new substance is formed, and in a physical change, no new substance is formed.
When a chemical reaction happens the configuration of elements changes and new products are formed wherein physical change only the transfer of energy happens.
Related Questions to study
Chemistry
When the equation KClO3 → KCl + O2 is balanced, what is the coefficient for KClO3?
When the equation KClO3 → KCl + O2 is balanced, what is the coefficient for KClO3?
ChemistryGrade-10
Chemistry
What are the missing coefficients for the following equation:
___Cr + ___Fe(NO3)2 →___Fe + ___Cr(NO3)3
What are the missing coefficients for the following equation:
___Cr + ___Fe(NO3)2 →___Fe + ___Cr(NO3)3
ChemistryGrade-10
Chemistry
When the following equation is balanced, what is the coefficient for NaBr?
Na + FeBr3 → NaBr + Fe
When the following equation is balanced, what is the coefficient for NaBr?
Na + FeBr3 → NaBr + Fe
ChemistryGrade-10
Chemistry
Balance this reaction:
___C3H8 +___O2 →___CO2 + ___H2O
Balance this reaction:
___C3H8 +___O2 →___CO2 + ___H2O
ChemistryGrade-10
Chemistry
Balance this reaction:
____ RbNO3 + ____ BeF2 →____ Be(NO3)2 + ____ RbF
Balance this reaction:
____ RbNO3 + ____ BeF2 →____ Be(NO3)2 + ____ RbF
ChemistryGrade-10
Chemistry
Balance this reaction:
____ HCN + ____ CuSO4 →____ H2SO4 + ____ Cu(CN)2
Balance this reaction:
____ HCN + ____ CuSO4 →____ H2SO4 + ____ Cu(CN)2
ChemistryGrade-10
Chemistry
Balance this equation:
H2 + N2 → NH3
Balance this equation:
H2 + N2 → NH3
ChemistryGrade-10
Chemistry
Balance this equation:
Al2O3 → Al + O2
Balance this equation:
Al2O3 → Al + O2
ChemistryGrade-10
Chemistry
Balance the following:
____ Al + ____ HCl → ____ AlCl3 + ____ H2
Balance the following:
____ Al + ____ HCl → ____ AlCl3 + ____ H2
ChemistryGrade-10
Chemistry
Balance the following:
____ Fe + ____ Cl2 → ____ FeCl3
Balance the following:
____ Fe + ____ Cl2 → ____ FeCl3
ChemistryGrade-10
Chemistry
Which of the following is an example of a chemical change?
Which of the following is an example of a chemical change?
ChemistryGrade-10
Chemistry
What type of change occurs when a new substance is formed that has different properties from the original substance?
What type of change occurs when a new substance is formed that has different properties from the original substance?
ChemistryGrade-10
Chemistry
A change in the shape of an object is an example of _________________.
A change in the shape of an object is an example of _________________.
ChemistryGrade-10
Chemistry
Which of the following is a chemical change?
Which of the following is a chemical change?
ChemistryGrade-10
Chemistry
What happens in all chemical changes?
What happens in all chemical changes?
ChemistryGrade-10
