Periodic Table Practice Problems
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Questions and Answers

What determines the atom's identity or type of element?

How many electrons are in the atom.

What is an electron used for and where is it found?

Determining the atomic number; the nucleus.

What is the role of a neutron in an atom?

The nucleus holds the neutrons and protons.

The atomic number is ____________ and can be determined by __________.

<p>the number of protons; looking at the periodic table.</p> Signup and view all the answers

Mass number is ___________ and can be determined by ____________.

<p>the number of neutrons; subtracting the atomic number from the atomic mass.</p> Signup and view all the answers

What is the center of the atom called?

<p>The nucleus.</p> Signup and view all the answers

What subatomic particle(s) is/are found in the nucleus?

<p>Proton and neutron.</p> Signup and view all the answers

Since atoms are neutral, they must have the same number of ____________ and ___________.

<p>electrons and protons.</p> Signup and view all the answers

An ion is an atom that has gained or lost protons, thus giving it a charge.

<p>False</p> Signup and view all the answers

Isotopes are atoms of the same element with different mass numbers.

<p>False</p> Signup and view all the answers

What type of element is nitrogen?

<p>Non-metal.</p> Signup and view all the answers

What type of element is potassium?

<p>Metal.</p> Signup and view all the answers

What type of element is boron?

<p>Metalloid.</p> Signup and view all the answers

Silicon has properties of both metals and non-metals. What type of element is it?

<p>Metalloid.</p> Signup and view all the answers

Manganese is a good conductor of electricity. What type of element is it?

<p>Metal.</p> Signup and view all the answers

The graphite in your pencil is made from carbon and is a brittle solid at room temperature. What type of element is carbon?

<p>Non-metal.</p> Signup and view all the answers

Where are metalloids located on the Periodic Table?

<p>Between the metals and non-metals.</p> Signup and view all the answers

What is true about non-metals?

<p>None of the non-metals are to the left of the metalloids.</p> Signup and view all the answers

Columns on the periodic table are called:

<p>Groups.</p> Signup and view all the answers

Rows on the periodic table are called:

<p>Periods.</p> Signup and view all the answers

I am located in group 2, period 3. What type of metal am I?

<p>Metal.</p> Signup and view all the answers

Which family is the most reactive group on the periodic table?

<p>Halogens.</p> Signup and view all the answers

Which is a property of Group 8A?

<p>Noble gases.</p> Signup and view all the answers

The Noble gases are:

<p>Non-metals.</p> Signup and view all the answers

Which family is radioactive?

<p>Actinides.</p> Signup and view all the answers

Francium is a soft metal that reacts violently with water. What group is Francium in?

<p>1A.</p> Signup and view all the answers

Which element has similar chemical properties to calcium?

<p>Si.</p> Signup and view all the answers

Magnesium, barium, and calcium are all:

<p>Alkaline earth metals.</p> Signup and view all the answers

Group 1A on the periodic table is more commonly called:

<p>The alkali metals.</p> Signup and view all the answers

Group 7A on the periodic table is also called:

<p>Halogens.</p> Signup and view all the answers

What does inert mean?

<p>Extremely unreactive.</p> Signup and view all the answers

Study Notes

Atomic Structure and Identity

  • An atom's identity is determined by the number of electrons.
  • Electrons are crucial for determining the atomic number, found in the nucleus.
  • Neutrons, along with protons, reside in the nucleus, contributing to the mass number.
  • The atomic number equals the number of protons and can be identified on the periodic table.
  • Mass number is calculated by subtracting the atomic number from the atomic mass.

Subatomic Particles

  • The nucleus is the center of the atom comprising protons and neutrons.
  • Atoms are neutral with equal numbers of electrons and protons.
  • An ion is an atom that gains or loses protons, resulting in an electrical charge.
  • Isotopes are variants of atoms with the same element but different mass numbers.

Classification of Elements

  • Nitrogen, potassium, boron, and carbon are classified as non-metals.
  • Silicon acts as a metalloid, possessing properties of both metals and non-metals.
  • Manganese is identified as a metal, known for its electrical conductivity.

Positioning in the Periodic Table

  • Metalloids are located between metals and non-metals on the periodic table.
  • Non-metals appear to the right of metalloids.
  • The periodic table features columns called groups and rows known as periods.

Element Families and Properties

  • Elements in group 2, period 3 are considered metals.
  • The halogens represent the most reactive group on the periodic table.
  • Group 8A consists of noble gases, which are non-metals known for being inert.
  • The actinides family is known for its radioactive properties.
  • Francium, a soft metal that reacts violently with water, belongs to group 1A.

Group Characteristics

  • Magnesium, barium, and calcium are categorized as alkaline earth metals.
  • Group 1A elements are referred to as alkali metals, while group 7A includes the halogens.
  • The term "inert" describes elements that are extremely unreactive.

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Test your knowledge of the periodic table with these flashcards! Each card covers fundamental concepts such as atom identity, electron roles, and the function of neutrons. Perfect for students looking to enhance their understanding of chemistry.

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