BiWeekly 3 Review

Front

How are most of the elements on the periodic table classified?

Back

Most of the elements on the periodic table are classified as metals.

Front

What type of charge do the particles buzzing around the nucleus have?

Back

The particles (electrons) buzzing around the nucleus have a negative charge.

Front

What is true about a positively charged ion?

Back

A positively charged ion is formed when an atom loses electrons.

Front

What does an atomic number of 8 signify for oxygen?

Back

An atomic number of 8 signifies that oxygen has eight protons in its nucleus.

Front

Which ion has a charge of 2+?

Back

An ion with 10 protons, 9 neutrons, and 8 electrons has a charge of 2+.

Front

Define 'ion'.

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions formed by losing electrons, while anions are negatively charged ions formed by gaining electrons.

Front

What is the significance of protons in an atom?

Back

Protons determine the atomic number of an element and its identity.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of an atom and help stabilize the nucleus.

Front

What is the electron configuration of oxygen?

Back

The electron configuration of oxygen is 1s² 2s² 2p⁴.