Review of 2nd Quarter PS 2024 Part 1

Front

What type of nuclear decay is represented by the equation: 214Bi → 0e + 214Po?

Back

Beta decay.

Front

What is a chemical change? Provide an example.

Back

A chemical change involves a transformation that alters the chemical composition of a substance. Example: Rusting of a bicycle.

Front

What type of radioactive particle can be stopped by a sheet of paper?

Back

Alpha particle.

Front

What is the mass of the chocolate cake in grams?

Back

250 g (Quantitative measurement).

Front

What does it mean if the temperature of the room is decreasing by 4 degrees Celsius?

Back

It is a quantitative observation.

Front

Define alpha particle.

Back

An alpha particle is a type of nuclear particle consisting of 2 protons and 2 neutrons, emitted during alpha decay.

Front

What is beta decay?

Back

Beta decay is a type of radioactive decay in which a beta particle (electron or positron) is emitted from an atomic nucleus.

Front

What distinguishes a physical change from a chemical change?

Back

A physical change does not alter the chemical composition of a substance, while a chemical change does.

Front

What is a quantitative observation?

Back

A quantitative observation involves measurements and numerical data.

Front

What is a qualitative observation?

Back

A qualitative observation describes characteristics or qualities that cannot be measured numerically.