Chapter 10 Lesson 4 & 5 Flashcards
What is a mixture?
When different materials are placed together but each material keeps its own properties.
What tool can separate iron filings from sand?
a magnet
What tool can separate pebbles and sand?
a strainer
What other way can you sort a mixture?
by hand
What is a solution?
A mixture in which substances are spread out evenly and will not settle.
What is a solute?
It is the substance that is dissolved in a solution.
What is a solvent?
The substance in which a solute is being dissolved.
Example of a solution and name the solute and solvent.
Solution = Salt water Solute = Salt Solvent = Water
How can mixtures be separated?
- By hand
- By magnet
- By filter or strainer
- By melting it
- By adding water to dissolve it
- By adding water to float it
- By spinning it
What is a physical change?
A change in which some properties of matter without forming a different kind of matter.
What is a chemical change?
A change of 1 or more types of matter into other types of matter with different properties.
Examples of physical change
- Change in state (melting, evaporation, freezing, condensation)
- Change in shape
- Change in size
- Change in color
What do Iron + oxygen yield?
What are the reactants?
Iron-oxide (rust)
Reactants are Iron and Oxygen
What do 3 g sodium + 2 g chloride yield?
What are the reactants?
5 g of sodium chloride (salt)
Reactants are Sodium and Chloride
What do vinegar + baking soda yield?
What are the reactants?
Carbon Dioxide
Reactants are Vinegar and Baking Soda
