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What is matter?
Anything that has mass and volume
What happens to the particles of matter if heat is added?
The particles increase in speed when temperature is increased
What is the phase change? Solid → liquid
melting
How does temperature change as a liquid becomes a gas?
Temperature increases
What does Boyle’s Law say about the relationship between pressure and volume?
As pressure increases, volume decreases (and vice versa)
What is a compound?
Two or more elements that have been chemically combined ex. HCl or NaCl
What is the difference between a chemical property and a physical property?
A chemical property is observed during or after a chemical change has occurred. A physical property can be observed without changing the chemical composition of the substance.
Which phase change? Liquid → solid
freezing
How does temperature change during the melting phase?
Temperature remains constant
What does Charles’ law say about the relationship between temperature and volume?
As temperature increases, volume increases (and vice versa)
How is a heterogeneous mixture different from a homogeneous mixture?
A heterogeneous mixture is not uniform throughout, while a homogeneous mixture is the combination of substances that are uniform throughout the mixture.
What is the difference between a chemical change and a physical change?
A chemical change changes the chemical composition of the substance- a brand new substance is formed. A physical change does not change the chemical composition of the substance- the substance maintains its identity.
What phase change? Solid → Gas
Sublimation
How does heat energy change during the melting phase?
Heat energy increases
What does Gay Lussac’s law say about the relationship between temperature and pressure?
As temperature increases, pressure increases (and vice versa)
What are the different phases of matter?
Solid, liquid, gas (plasma)
What is the chemical reaction that takes place when an acid mixes with a base?
neutralization
What phase change? Gas → solid
deposition
What 2 pieces of information do you need to find the density of an object?
Mass & volume
What are the 2 parts of a solution? Can you pick out the two parts?
Solute- substance that dissolves, solvent- substance that dissolves the solute
How do the particles of a solid, liquid, and gas behave?
Solids: particles are tightly packed and vibrate
Liquids: particles have more space between them and flow slowly
Gases: particles are spaced out and have more room for motion
What is the product of neutralization? (hint: there are 3 products)
Salt
Water
gas
What phase change? Liquid → gas
Vaporization
What do objects with less density do?
float
What can be done to increase the dissolving rate of a solute?
Decrease particle size
Increase temperature
Increate motion of particles