Madyson is baking a cake and needs to use a specific ratio of ingredients. The recipe calls for a ratio of 1 part sugar to 2 parts flour. What does the “2” tell you?

• Flour has a 2- charge.

• There are two parts sugar to every part flour.

• There are two parts flour for every part sugar.

• Flour has a 2+ charge.

A group of atoms with a charge is known as ....

• isotope
• ions
• polyatomic ions
• diatomic

Because the electrons in a molecule of hydrogen fluoride (HF) are more strongly pulled toward the fluorine atom, the molecule is ____________________.

• polar
• nonpolar
• ionic
• diatomic 

Tags

NGSS.HS-PS1-1

What is a double bond?

• a bond between two atoms
• one pair of electrons shared between two atoms
• two pairs of electrons shared between two atoms
• James Bond's brother

Molecular compounds that dissolve in water do not conduct electricity because no ___________________ are present.

• charged ions (particles)
• uncharged ions (particles)
• polar
• nonpolar

Jayden is conducting an experiment in his chemistry class. He needs to determine the correct chemical formula for the compound created by the combination of Magnesium and Phosphorus. Which of the following is the correct formula?

• Mg₂P₃

• MgP

• Mg₃P₂

• MgP₂

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Is Hydrogen considered a metal or a non-metal?

• Metal
• Non-metal

Compounds with these kinds of bonds have low melting and boiling points.

• Metallic
• Ionic
• Covalent
• None of the above

Tags

NGSS.HS-PS1-1

Why do Hydrogen and Helium only need two valence electrons?

• The first electron shell can only hold two electrons.
• They are both metals.
• They both begin with H.
• They are both gases.

Tags

NGSS.HS-PS1-1

Which group of elements have full outer shells?

• The alkali metals
• The full gases
• The halogens
• The noble gases

Tags

NGSS.HS-PS1-1