Science Flashcard

Front

What does the electron cloud model of the atom represent?

Back

It shows a higher probability of finding an electron in certain areas surrounding the nucleus.

Front

Why is most of the mass of an atom contained in the nucleus?

Back

Protons and neutrons have more mass than electrons.

Front

Which element is the most common among living organisms?

Back

Oxygen.

Front

What happens to the arrangement of atoms when a solid becomes a liquid?

Back

The atoms move apart from each other.

Front

Where will a ball with a density of 1.73 g/cm³ come to rest in a beaker with different liquids?

Back

Between liquids C and D.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is density?

Back

Density is the mass of a substance divided by its volume.

Front

What is the state of matter for closely packed atoms?

Back

Solid.