Elements, Compounds, Mixtures Flashcards
What is a mixture
Two or more elements or compounds not chemically combined
How would you seperate a homogeneous mixture?
If it is a homogeneous mixture might need to use chemical means
What is a homogeneous mixture?
Evenly distributed throughout, uniform substance and has one fase of matter
What is a heterogeneous mixture?
Not uniform meaning it has uneven distribution of parts e.g. salad, sandwich
What is a compoud?
A pure substance comtaining teo or more kinds of elements e.g. water - H2o
How are atoms arranged in a compound?
Chemically combined in some way, could form groups called molecules
How can compounds be separated?
Cannot be seperated by physical means, it requires a chemical reaction
What is an element?
A pure substance that cannot be broken down into simpler substances. It is a homogeneous substance
How many elements in the pirodic table?
118 and 92 of which are naturally occurring
Discribe atoms in an element?
Atoms in any one element are almost the exact same, most element are found in a gas or solid state.
