Chemistry Quest

An ion is formed when an atom gains or loses which subatomic particle?

Isotopes are atoms of the same element but have different numbers of neutrons, resulting in different mass numbers.

You are given a unknown substance. When dissolved, it conducts electricity. As a solid, it forms a crystal structure.

What are the three main subatomic particles that make up an atom?

Which of the following elements would you expect to have the highest ionization energy, and why?

Come with us on a Chemistry Quest!

Why does the atomic radius generally decrease as you move from left to right across a period?

The atomic number of an element tells you the number of which particle in the nucleus?

The atomic mass is equal to the sum of the number of protons and neutrons in the nucleus.

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Why do ionic compounds typically have high melting and boiling points?

Which describes a major difference between the properties of a substance with metallic bonding and with covalent bonding

Ionization energy is the energy required to remove an electron. Fluorine has a strong nuclear pull.

What is the atomic mass of an atom primarily determined by?

Explain why Sodium (Na) has a much lower ionization energy than Lithium (Li).

As you move across a period, the number of protons in the nucleus increases, leading to a stronger positive charge.

Atoms are mainly made of protons (positive & in nucleus), neutrons (in nucleus), and elctrons(negative & around)!

The atomic number is a property of an element and is the number of protons in the nucleus of an atom of that element!

Ions are formed when an atom gains or loses electrons. Gaining electrons results in a negatively charged ion (anion).

Why is the electron affinity of (Cl) more exothermic (releases more energy when gaining an electron) than that of (S)?

Atoms of the same element that have different numbers of neutrons are called: