Mixtures
Why are pebbles on the beach along with the sand and waves considered a mixture, not a solution?
A solution must appear the same throughout all its parts.
When observing a beaker where the contents of the beaker appear evenly dispersed, meaning that the liquid appears the same throughout the beaker.
Could the beaker hold a solution of two liquids?
Yes, the beaker can hold a solution of 2 liquids, if the liquids have the same viscosity.
A Strawberry Milkshake
is a Solution. The berries, ice cream, milk, and sugar are blended together to create a creamy thick drink. All the ingredients combine together to make one substance.
Mixture
when you combine two or more substances together and the substances keep their individual physical properties
example: when we combine apples, bananas, and grapes we get a fruit salad
Oil and water form a ____ because they ____ combine to form a new substance.
Complete the sentence
Oil and water form a mixture because they do not combine to form a new substance.
Food dye and water___ form a solution because the food dye _____ the water.
Complete the sentece
Food dye and water do form a solution because the food dye spreads throughout the water.
Sparkling water
This is a Mixture, the carbonation in the water can be removed if you shake the bottle
Solution
When one substance is added to another and the one of the substances dissolves into the other, creating a new substance.
example: When lemon juice, sugar, and water are combined we get Lemonade.
In a bucket you find sand, shells, and twigs. What tool could you use to remove the shells and twigs from the sand?
A sieve would be a great tool to use and the sand would fall through and the shells and twigs will be left in the sieve.
Myron wonders if the liquid is a solution of salt and water. Which is the most useful way he can gather evidence to answer his question?
He can place a spoonful of the liquid in sunlight and let it evaporate.
Example- a Nickle
This is a solution. The metal in a Nickle is a combination of a few different metals that are melted down and then shaped to make the coin.
Viscosity
When two substances are similar, but one is thicker than the other
example- oil is more viscous than vinegar, when combined they do not create a new substance, rather the oil sinks to the bottom and the vinegar sits on top
Can two liquids be a mixture?
Yes, Oil and Vinegar are a mixture. The two liquids have different Viscosity. Oil is thicker than Vinegar.
Marlene is investigating a powdery solid in the form of a cube. She drops the cube in a glass of water.
What observation would support the conclusion that the solid dissolves in water?
The cube appears to slowly shrink and then seems to disappear.
Mud
Mixture
If you add heat the water will turn to a gas and you are left with dirt. A new substance is not made.
Dissolves
When one substance breaks down in another substance
example- salt in water, sugar in water, drink mix in water