How do we arrange the modern periodic table?

• by atomic mass

• by electron number

• by atomic number

• by element name

Why do ionic bonds form?

• positive ions (cations) are attracted to negative ions (anions)

• electrons are shared

• the electrons are delocalized

• the nuclei of each atom has a different number of neutrons

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-3

To balance chemical equations we must change the __________.

• subscripts

• types of elements

• coefficients

• Conservation Law

Tags

NGSS.HS-PS1-7

Ionic bonds form between ____________________.

• metals and nonmetals

• elements on the left and right side of the periodic table

• nonmetals

• elements on the right side of the periodic table

What is the oxidation number (charge) of Group 13?

• +13

• +3

• -13

• -3

As the temperature of a substance rises so does its _____________.

• number of electrons

• flammability

• chemical properties

• kinetic energy

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

How do we represent the charge of the cation in a bond that has a transition metal?

• it is known already

• Roman Numerals

• we don't represent the charge

• a superscript

What must we use to represent the number of atoms of one element when naming a covalent compound?

• subscripts

• coefficients

• Roman Numerals

• prefixes

What subatomic particle has the same amount for every atom in a given element?

• electrons

• protons

• neutrons

• quarks

When a gas is heated it will ___________.

• expand

• contract

• burn

• react with oxygen

Tags

NGSS.MS-PS1-4