Atoms Review

Front

What is the mass number of an atom, and how is it calculated?

Back

The mass number of an atom is the total number of protons and neutrons in its nucleus. It is calculated by adding the number of protons (atomic number) to the number of neutrons.

Front

How many neutrons are in an atom with 36 protons and a mass number of 84?

Back

48 neutrons (calculated as mass number 84 - protons 36 = neutrons 48).

Front

What charge do electrons carry, and how does it compare to protons?

Back

Electrons carry a negative charge, which is smaller in magnitude than the positive charge of protons.

Front

Where are electrons located in an atom, and what is their charge?

Back

Electrons are located outside the nucleus of an atom and carry a negative charge.

Front

What is the nucleus of an atom, and what particles does it contain?

Back

The nucleus is a small, dense region at the center of the atom, containing positive protons and neutral neutrons.

Front

What types of particles are found outside the nucleus of an atom?

Back

Only negative particles, which are electrons, are found outside the nucleus.

Front

Define an atom and its basic structure.

Back

An atom is the smallest unit of an element, consisting of a nucleus (containing protons and neutrons) and electrons that orbit around the nucleus.

Front

What is the atomic number of an element, and what does it represent?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

Explain the difference between protons, neutrons, and electrons in terms of charge and location.

Back

Protons are positively charged and located in the nucleus, neutrons are neutral and also located in the nucleus, while electrons are negatively charged and located outside the nucleus.

Front

How does the number of protons in an atom affect its chemical properties?

Back

The number of protons determines the element's identity and its position in the periodic table, which influences its chemical properties and reactivity.