Periodic Table of Elements

Front

What are Alkali metals?

Back

Alkali metals are highly reactive metals found in Group 1 of the periodic table. They include lithium, sodium, potassium, rubidium, cesium, and francium.

Front

What do elements in the same group of the periodic table have in common?

Back

Elements in the same group have the same number of valence electrons, which determines their chemical properties.

Front

How are elements arranged in the periodic table?

Back

Elements are arranged in increasing atomic number from left to right.

Front

Is it true that elements in the same group have the same number of energy levels?

Back

FALSE. Elements in the same group have the same number of valence electrons, but they can have different numbers of energy levels.

Front

What is a characteristic of nonmetals?

Back

Nonmetals are often gases at room temperature and are poor conductors of electricity.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals. They are found along the zig-zag line on the periodic table.

Front

What is the significance of the atomic number?

Back

The atomic number represents the number of protons in an atom's nucleus and determines the element's identity.

Front

What are noble gases?

Back

Noble gases are elements in Group 18 of the periodic table that are colorless, odorless, and inert due to their full valence electron shell.

Front

What is the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

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NGSS.HS-PS1-2

Front

What are transition metals?

Back

Transition metals are elements found in Groups 3-12 of the periodic table, known for their ability to form various oxidation states and colored compounds.