Explanation

• A Homogeneous mixture has the same proportion of its compound in a sample.
  • Sugar in water is a homogeneous mixture.
• A Heterogeneous mixture has a different proportion of its compound in a sample. 
• A Mixture in which a solute particle does not dissolve, but gets suspended is a suspension.
• A solution in which the substances are regularly suspended in a fluid is a Colloidal Solution.
• A true solution is a homogeneous mixture of two or more substances in which the substance dissolved in the solvent has a particle size of less than 10-9 m or 1 nm.

Explanation

Explanation

Explanation

Ions and compounds are colorless is not a property of transition elements.

Transition elements often form colored compounds due to d-d electron transitions, while they also exhibit high melting points.

They are hard metals, and are good conductors of electricity.

Explanation

The solubility of sulfates of alkaline metals generally decreases down the group.

As you move down the group, the lattice energy of the sulfates increases.

This making them less soluble in water.

Explanation

Formaldehyde contains:

• one carbon atom
• two hydrogen atoms
• one oxygen atom.

The formaldehyde formula is written CH2O or HCHO,

At room temperature, formaldehyde is a colorless, flammable gas that is a distinct, pungent smell.

It is also known as :

• methanal,
• methylene oxide,
• oxymethylene,
• methyl aldehyde
• oxomethane.

Explanation

Explanation

Explanation

In an endothermic reaction, the heat content of the products is more than that of the reactants.

This is because endothermic reactions absorb heat from their surroundings.

It leading to an increase in the enthalpy (heat content) of the products compared to the reactants.

Explanation