Final Honors Chemistry Sem 1

Front

What is the formula to calculate the volume of a solid using water displacement?

Back

Volume = Final water level - Initial water level.

Front

What is the significance of significant figures in measurements?

Back

Significant figures indicate the precision of a measurement and help convey the certainty of the data.

Front

What is an alpha particle?

Back

An alpha particle is a helium nucleus consisting of 2 protons and 2 neutrons.

Front

What is the balanced chemical equation for the combustion of butane (C4H10)?

Back

2C4H10 + 13O2 → 10H2O + 8CO2

Front

How do you calculate the actual yield from the theoretical yield?

Back

Actual Yield = Theoretical Yield × (Actual Yield Percentage / 100).

Front

What is the definition of a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its identity.

Front

Are all physical properties constants?

Back

No, physical properties can vary; for example, mass can differ between objects of different sizes.

Front

What is atomic mass?

Back

Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

Which element has the greatest atomic mass: Bohrium, Uranium, Francium, or Seaborgium?

Back

Seaborgium has the greatest atomic mass.

Front

What is the role of oxygen in combustion reactions?

Back

Oxygen acts as a reactant that combines with a fuel to produce energy, carbon dioxide, and water.