Module 11
What letter stands for pressure in Boyle’s Law?
P
What happens to the pressure of a gas if its volume decreases while temperature stays constant?
pressure increases
Does molarity measure concentration or temperature?
Concentration
Does an exothermic reaction release or absorb heat?
Release heat
What theory explains that particles must collide to react?
Collision Theory
What letter stands for volume in Boyle’s Law?
V
What is it called when water turns into gas?
vaporization
a substance can dissolve in another substance.
soluble
Does an endothermic reaction feel colder?
What must happen during a collision for a reaction to occur?
Particles must collide with enough energy and proper orientation
This is defined as the force applied per unit area.
pressure
What happens to pressure when temperature increases in a sealed container?
Pressure rises
What is molarity used to measure?
mol/L
Is fire exothermic or endothermic?
Exothermic
Why do some collisions fail to produce reactions?
Not enough activation energy or correct orientation
If a balloon is squeezed, does the pressure increase or decrease?
Increase
Which three variables are related in the Combined Gas Law?
Pressure volume temperature
If more solute is added, does concentration increase or decrease?
Increase
Is melting ice exothermic or endothermic?
endothermic
How does increasing temperature affect collisions?
It increases the number of effective collisions
This property results from an inward pull on particles at the surface, making a liquid act as if it has a thin skin.
surface tension
What phase change is gas directly to solid?
Deposition
Adding more water spreads out the juice particles, making the concentration lower and the flavor weaker. What is this process?.
dilution
Because an endothermic reaction absorbs heat from its environment, touching the beaker will make it feel cold. Conversely, an exothermic reaction releases heat, causing this in the temperature of the surroundings.
increase
Explain why orientation matters in Collision Theory.
Particles must collide in the correct way so bonds can break and form properly