9th Physical science review

Front

What happens to the volume of a gas when the temperature increases?

Back

An increase in temperature increases the volume of the gas.

Front

What is the chemical formula for nitrogen (I) oxide?

Back

N2O

Front

What happens to the volume of a gas if the number of particles is doubled?

Back

The volume of the gas doubles.

Front

What was the result of the uncontrolled series of chain reactions at the Chernobyl plant?

Back

Core meltdown.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds require positive and negative charges, while covalent bonds require the sharing of electrons.

Front

What is the relationship between pressure and volume of a gas according to Boyle's Law?

Back

As pressure increases, volume decreases, and vice versa.

Front

Define kinetic energy in the context of physical science.

Back

Kinetic energy is the energy of an object due to its motion.

Front

What is the principle of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is the pH scale used for?

Back

The pH scale measures the acidity or basicity of a solution.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.