Explanation

• In a solid, the particles are closely packed and have a fixed position.
• But they still have some freedom to vibrate or oscillate in place, due to their thermal energy.

Explanation

In beta decay (β⁻ emission), a neutron in the nucleus converts into a proton and emits a beta particle (electron).

This increases the atomic number by 1, but the atomic mass remains nearly the same.

Explanation

French physicists Charles Fabry and Henri Buisson discovered the ozone layer in 1913.

They used an interferometer to measure the amount of ozone in the atmosphere.

Explanation

Coulomb's law deals with the force between electric charges, not the relationship between volume and pressure of a gas.

The inverse relationship between volume and pressure is explained by Boyle's Law, not Coulomb’s law.

Explanation

In beta-minus decay, a neutron is converted into a proton, increasing the number of protons and a corresponding increase in the atomic number of the element, while the mass number remains unchanged.

Thus, the new nucleus has one more proton than the original.

Explanation

The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.

This principle helps to explain the arrangement of electrons in atoms.

Explanation

• When a metal bubbles when placed in an unknown liquid, it indicates that a chemical reaction has taken place.
• Bubbling is often a result of a gas being released during a reaction.
• In this case, the metal is reacting with the unknown liquid to produce gas, causing the bubbling effect.
• This is a clear indication that a chemical reaction has occurred.

Explanation

• Deuterium, also known as heavy hydrogen.
• It has 1 proton and 1 neutron in its atomic nucleus.

Explanation

• Protium is the lightest and most abundant isotope of hydrogen.
• It has only 1 proton in its atomic nucleus.

Explanation

• Reverse Osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water.
• This membrane has tiny pores that allow water molecules to pass through, but block larger particles and impurities.