1st Semester SS Final Exam 22 3rd

Front

What is the name of group number 1 in the periodic table?

Back

Alkali metals

Front

Which letter represents particles in solid form?

Back

A

Front

Is this a correct dot diagram for carbon (C)?

Back

True

Front

What is the atomic number of the atom with 3 protons?

Back

3

Front

Which classification of elements are gases or dull brittle solids and poor conductors?

Back

Nonmetals

Front

What are the properties of alkali metals?

Back

They are highly reactive, especially with water, and have one electron in their outermost shell.

Front

What distinguishes nonmetals from metals?

Back

Nonmetals are poor conductors of heat and electricity, and they can be gases, liquids, or brittle solids.

Front

What is the significance of the atomic number?

Back

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

Front

What are halogens?

Back

Halogens are elements in group 17 of the periodic table, known for being highly reactive nonmetals.

Front

What are noble gases?

Back

Noble gases are elements in group 18 of the periodic table, known for their lack of reactivity due to having a full outer electron shell.