Periodic Table

What is the term for elements that have similar properties and are in the same column of the periodic table?

• group or family

• period

• block

• series

What subatomic particle is found in the nucleus and is neutral?

• proton

• electron

• neutron

• positron

Every element has a unique number of _______________.

• neutrons

• electrons

• protons

• nuclei

What is the term for elements that can conduct electricity and heat well?

• metals

• nonmetals

• insulators

• semiconductors

What is the atomic number of an element?

• The number of protons in the nucleus of an atom.

• The total number of electrons in an atom.

• The number of neutrons in the nucleus of an atom.

• The mass of an atom measured in atomic mass units.

Which subatomic particle has a positive charge?

• neutron

• electron

• proton

• photon

The chemical properties of an element are determined by the number of _______________.

• protons

• neutrons

• valence electrons

• core electrons

What is the significance of valence electrons in chemical bonding?

• They determine how an element will bond with others.

• They are responsible for the mass of an atom.

• They are found in the nucleus of an atom.

• They dictate the color of the element.

What is the periodic law?

• The properties of elements are a periodic function of their atomic numbers.

• The atomic mass of elements increases periodically.

• Elements are arranged in order of increasing density.

• The chemical properties of elements are random and do not follow a pattern.

What is the difference between an element and a compound?

• An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

• An element can be broken down into simpler substances, while a compound cannot.

• A compound is a pure substance made of one type of atom, while an element is made of two or more different types of atoms.

• Elements are always gases, while compounds can be solids, liquids, or gases.