Periodic Table and Atom Fundamentals

These flashcards cover key concepts related to the periodic table, atomic structure, and properties of elements.

How does the Modern Periodic Table arrange elements?

According to atomic numbers.

What are the vertical columns of elements in the periodic table called?

Groups.

Where are the most active metals found in the periodic table?

At the far left side.

Which element is the most reactive nonmetal?

Iodine (I).

Which of the following is a metalloid?

Beryllium (Be).

What are the horizontal rows of elements in the periodic table called?

Periods.

Which symbol represents a nonmetal?

Br (Bromine).

Who developed the Periodic Table based on the properties of the elements?

Dimitri Mendeleev.

Which list contains elements that are all in the same period?

N, O, Cl, Ne.

What is the correct formula for a compound containing cesium and sulfur?

CsS.

What is the electrical charge and location of a neutron in an atom?

0 and in the nucleus.

What are positively charged particles found in the nucleus of an atom called?

Protons.

Which two subatomic particles are found in the nucleus of an atom?

Neutrons and protons.

What is the charge on the anion in the compound Cu₂S?

2-.

If an atom loses an electron, what does it become?

A positive ion.

What do atoms that have become ions do in terms of electrons?

Have lost or gained electrons.

Which symbol does not represent an ion?

Na.

What happens when particles with the same charge are moved closer to each other?

They will repel.

What happens to the electrons of a metal atom during oxidation?

Electrons are lost by the atom.

What should the object to be plated be in an electroplating cell?

The cathode that is negative.

Which equation correctly represents the oxidation of calcium to calcium ion?

Ca → Ca²+ + 2e-.

Which element is found uncombined in nature because it resists oxidation?

Platinum.

What is true about the mineral resources of our planet?

They are nonrenewable and not evenly distributed.