Chemical Formulas
How many atoms are in NH3?
4
What determines how atoms bond?
Valence electrons
Which IMF is strongest?
Hydrogen Bonding
What gas is produced in elephant toothpaste?
Atomic Radius Increases In Which Direction?
Down
What is cohesion?
Water sticking to itself
What is the charge of NH4+
+1
What type of bond shares electrons EQUALLY?
Nonpolar Covalent
What IMF exists in all molecules? (This is the weakest IMF example)
London Dispersion
What does a catalyst do?
Speeds up reaction
Electronegativity Increases In Which Direction?
Across (Left --> Right)
What is Adhesion?
Water sticking to other surfaces?
What does a chemical formula show?
Types and ratios of atoms
What type of bond forms when electrons are transferred?
Ionic
Why does water have high surface tension?
Strong Hydrogen Bonding
What did the Fast & The Fragrant Lab (NYS Lab Investigation #1) Test for?
Evaporation & IMF
Which has higher electronegativity: O or Na?
Oxygen
Define Evaporation
Liquid --> Gas
Which is a polyatomic ion: H2O or NO3-?
NO3-
What type of bond is H₂O?
Polar Covalent
Which evaporates faster: strong or weak IMF?
Weak IMF
Why is NH₄⁺ useful?
It provides nitrogen for plants
What happens to atomic radius across a period?
Decreases
Define Polarity
Uneven Charge Distribution
Why does H₂O differ from H₂O₂?
Different Ratios --> Different Substances
What happens as electronegativity difference increases?
Bond becomes more ionic
Why does Hexane evaporate faster than water?
Weaker IMF
What happens when IMF increases?
Evaporation Decreases
Why do atoms bond?
To become stable (full valence shell)
Define Polyatomic Ion
Group of atoms with a charge