Chapter 15: Composition of Matter Flashcards
Matter can be a…
Pure substance or a Compound
Pure substance…
Matter with a fixed composition
Elements…
All atoms are alike and they have unique properties
Mixture…
2 or more substances NOT chemically bonded together
Molecule…
2 or more atoms bonded together
Diatomic Molecule…
Molecule that consists of 2 atoms of the same element
Compound…
2 or more different atoms (different elements) that are combined in a fixed ratio
In compounds…
The elements lose their original properties and the compound gains new ones
Mixtures retain…
The properties of the substances that are in them
Heterogeneous…
Different materials can be distinguished easily
Homogeneous…
Blended evenly (also called solution) will NOT settle
Suspension…
Heterogeneous mixture containing a liquid in which visible particles settle
Alloys are mixtures of what?
Metals
When manually separating things you…
Hand pick based on size, shape, color, texture
Sifting/sieving is separating a…
Dry mixture based on particle size
