Ch 8 - Periodic Table, Vocabulary and Symbols

What is the definition of 'atomic mass'?

• average mass of isotopes of an element found in nature; protons and neutrons added together

• number of electrons in an atom

• total number of atoms in a molecule

• mass of only the protons in an atom

What is the definition of 'Protons'?

• positively charged particles in the nucleus of an atom

• negatively charged particles in the nucleus of an atom

• neutral particles in the nucleus of an atom

• particles that orbit the nucleus of an atom

What is the definition of 'neutrons'?

• particle in the nucleus of an atom having no charge

• positively charged particle in the nucleus of an atom

• negatively charged particle orbiting the nucleus

• smallest unit of a chemical element

What is the definition of 'Electrons'?

• tiny negatively charged particles

• positively charged particles in the nucleus

• neutral particles in the atom

• particles that make up light

Tags

NGSS.MS-PS1-1

What is the definition of 'Group'?

• elements in the same vertical column of the periodic table; also called family

• elements in the same horizontal row of the periodic table; also called period

• a substance made of two or more elements chemically combined

• the smallest unit of an element that retains its properties

What is the definition of 'Families'?

• same as a group

• a type of animal

• a kind of plant

• a scientific tool

What is the definition of 'atomic number'?

• The number of protons in the nucleus of an atom

• The number of neutrons in the nucleus of an atom

• The total number of electrons in an atom

• The sum of protons and neutrons in the nucleus

What is the definition of 'Malleable'?

• a term used to describe material that can be hammered or rolled into flat sheets

• a term used to describe material that is resistant to corrosion

• a term used to describe material that conducts electricity well

• a term used to describe material that is transparent

What is the definition of 'Ductile'?

• a term used to describe a material that can be pulled out into a long wire

• a term used to describe a material that breaks easily under stress

• a term used to describe a material that resists corrosion

• a term used to describe a material that is a good conductor of electricity

What is the definition of 'Reactivity'?

• The ease and speed with which an element combines or reacts with other elements and compounds

• The amount of energy required to remove an electron from an atom

• The number of protons in the nucleus of an atom

• The ability of an atom to attract electrons in a chemical bond

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-5