Classification of Matter Flashcards
What is a pure substance?
Matter that has a uniform and unchanging composition.
What are the two types of pure substance?
Elements and compounds.
What are elements also called?
Atoms.
What are elements made up of?
A single type of atom.
What do the squares on the periodic table represent?
The different types of atoms.
What are elements?
Elements are substances that can’t be broken down or changed into other simpler substances by chemical means.
What are examples of elements?
Iron, carbon, oxygen.
What is a compound made up of?
A compound is made up of 2 or more atoms by chemical means together.
How can compounds be broken down?
They can only be broken down by chemical means.
What are molecules?
More than one atom bonded together.
What 2 substances can molecules be?
Elements or compounds.
What is a mixture?
A physical blend of two or more pure substance mixed together.
How can mixtures be separated?
They can be separated by physical means.
What are some examples of compounds?
Water, salt, and sugar
What are some separations methods for mixtures?
Distillation, filtration, crystallization, chromatography, and more.
