SPS1 - Periodic Table and Atomic Structure

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, where elements with similar properties are grouped together.

Front

What defines an element?

Back

An element is defined by the number of protons in its nucleus; for example, carbon has 6 protons.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is a group in the periodic table?

Back

A group is a column in the periodic table that contains elements with similar chemical properties and the same number of valence electrons.

Front

What is an atomic number?

Back

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

Front

What happens to an atom when it loses protons?

Back

When an atom loses protons, it changes into a different element.

Front

What is the difference between metals, nonmetals, and metalloids?

Back

Metals are typically shiny, conductive, and malleable; nonmetals are dull, insulative, and brittle; metalloids have properties of both metals and nonmetals.

Front

What phase do most metals exist in at room temperature?

Back

Most metals exist in a solid phase at room temperature.

Front

What is the significance of the atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, reflecting the number of protons and neutrons in the nucleus.

Front

What is an isotope?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.