Thou Shalt Not Forget Regents Chemistry

What type of alloy is made when the radii of the atoms are similar in size?

• interstitial

• substitutional

This is a representation of a hydrogen bond.

• True

• False

This is a representation of a hydrogen bond.

• True

• False

Which atom has the negative dipole in this molecule?

• Hydrogen

• Fluorine

• Neither

Tags

NGSS.HS-PS1-2

In this molecule, Carbon has a formal charge of ____ and Nitrogen has a formal charge of _____.

• 0, 0

• 1, 0

• 0, -1

• -1, 0

Tags

NGSS.HS-PS1-1

What is the formula for calculating % yield?

• actual/theoretical *100

• theoretical/actual *100

What is a limiting reactant?

• The reactant that runs out first

• The reactant that has the lowest mass

• The reactant with the smallest coefficient

• The reactant with the lowest molar mass

Tags

NGSS.HS-PS1-7

Combustion reactions produce what two substances?

• Water Vapor and Carbon Dioxide

• Carbon Dioxide and Oxygen

• Oxygen and Water Vapor

As the electronegativity difference between 2 atoms increases, the polarity of the bond ____________________

• increases

• decreases

What type of bond forms between hydrogen and chlorine?

• polar covalent

• non-polar covalent

• ionic

• hydrogen bond

Tags

NGSS.HS-PS1-1