Chem final P2 2024 sem 1 51-100

Front

What is the molar mass of table salt (NaCl)?

Back

58.443 g/mol

Front

Which technique is best for separating soil and water?

Back

Filtration

Front

Making a mixture results in only ___________.

Back

physical changes

Front

At which point does the ball have the greatest gravitational potential energy (GPE)?

Back

A

Front

In which segment is the kinetic energy remaining constant?

Back

B-C, D-E

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is the principle behind filtration?

Back

Filtration separates solids from liquids by passing the mixture through a filter that allows only the liquid to pass.

Front

Explain the difference between a physical change and a chemical change.

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is gravitational potential energy (GPE)?

Back

The energy an object possesses due to its position in a gravitational field, calculated as GPE = mgh (mass x gravity x height).

Front

What is kinetic energy?

Back

The energy of an object due to its motion, calculated as KE = 1/2 mv² (1/2 x mass x velocity squared).