States of Matter
This is the state of matter that has a definite shape and volume
What is a solid?
Define "soluble".
the amount of a solute that can dissolve in a specific amount of another solvent
These types of substances contain only one type of particle.
What are pure substances?
All substances in a substance are made up of tiny these.
What is a particle?
What is the main purpose of paper chromatography?
To separate the different substances in a mixture.
The states of matter that have a definite volume
What are solids and liquids?
What does it mean for something to be "dilute".
Opposite of concentrated (has only a small amount of solute dissolved in the solvent)
Solubility is impacted by
What are the type of solute, type of solvent, and temperature?
Stirring, breaking apart and heating a substance up are all ways we can increase the rate the substance
What is dissolves?
This state of matter decreases solubility as the temperature increases
What is a gas
The state of matter that has neither a definite shape or volume.
What is a gas?
When comparing concentrations, what has to be the same?
The units (must both be in g/ml or g/100ml)
A mixture that appears to look like one substance is a
What is a solution?
Particles can never touch. This is because they have this in between them.
What is space?
The method of transporting a mixture of oilsand and water is called
What is a slurry?
Fluids can be these states of matter.
What are liquids and gases?
In a solution, 25g of solute is dissolved in 50ml of solvent. What is the concentration in g/ml?
0.5g/ml
Oil and water when mixed together are called this.
What is a heterogeneous (or mechanical) mixture?
According to the particle model of matter, if this increases, then the speed of the particles will also increase.
What is the temperature?
When the temperature of the nearby lake increases, the fish begin to die. Give at least two reasons why (related to content in the unit).
- Less oxygen dissolves in hot water so fish can't breath
- More dangerous (solid) chemicals dissolve which poison the fish
A fluid is
What is a substance that flows?
Solution A has a concentration of 15g/ml. Solution B has 15g of solute dissolved in 40ml of solvent. Which solution is more concentrated?
Solution A (15g/ml has more solute dissolved in 1ml of solvent than 0.375g/ml)
When you try to mix salt and water, and no more salt can be dissolved, the solution is said to be this.
What is saturated
Water particles surround the solute (sugar) crystals, sliding between spaces and pulling the solute particles apart until they are evenly distributed.
There is space between particles and particles are always moving.
A student dissolves a crushed up sugar cube in hot water while stirring.
Another student dissolves a whole sugar cube in cold water without stirring.
The first sugar cube dissolves much faster.
Using the particle model of matter, explain 3 reasons why the first sugar cube dissolves faster.
Higher temperatures cause particles to move faster.
Stirring increases collisions between solvent and solute particles.
Less surface area increases spaces for water to contact sugar to dissolve it