matter part 1 Flashcards
Chemistry
the study of matter, it’s composition, and its interactions
Matter
Everything, anything with mass (amount of matter) and volume (space it takes up)
Atom
Smallest unit of matter, cannot be broken down
Element
A type of atom, a pure substance that cannot be broken down
Symbols are either 1 capital letter or 1 capital and a lowercase letter
Chemical Bond
The link between two atoms, holding them together
Substance
Something you cannot break into simpler parts using physical changes
Molecules and compounds
Molecule
A combination of two or more atoms
Compound
two or more elements chemically combined
Elements are in specific amounts as seen in their chemical formula (ex. H₂O)
Can only be broken down with chemical reactions
Mixture
Two or more substances physically combined in any amounts
They do not change chemically
Heterogeneous and homogeneous mixtures
Heterogeneous Mixture
Two or more substances that aren’t evenly mixed, you can see different parts
Homogeneous Mixture
Two or more substances that are evenly mixed, you cannot see different parts, a solution
Solution
A homogeneous mixture
Solute
Substance that gets dissolved
Solvent
Substance that does the dissolving
*universal solvent is water