Elements
True or False: An element is a pure substance
True
True or False: A compound is a mixture
False... it is a pure substance
True or False: A suspension is a heterogenous mixture?
True (zesty Italian dressing!)
True or False: H2O is a heterogeneous mixture
False... Water is a compound
Soil
heterogenous mixture
Give an example of 3 elements
Oxygen (O), Nitrogen (N), Fluorine (F)
Give 3 examples of a compound
Carbon dioxide, Water, Monoxide
Give an example of a heterogeneous mixture you would find in your kitchen.
Italian dressing, lucky charms, salsa
Give two examples of a homogenous mixture
Milk, sugar & water, gatorade, juice
Magnesium Oxide (MgO)
Pure substance --> compound
What is the basic particle from which all elements are made of?
Atom
When elements chemically combine, they form compounds. Are the properties of the compound different or the same as the elements?
Different
How can you separate a heterogeneous mixture?
Filtration, physically separating
Which does the dissolving and which is dissolved?
solute is dissolved. solvent does the dissolving
iron
Pure substance --> element
What is an element?
A substance that cannot be broken down into any other substances by physical or chemical means
How many elements are there in a compound?
2 or more
Give two examples of a suspension
Snowglobe, Italian dressing, sand & water, oil & water
Give two examples of a colloid
Milk, fog, deodorant, paint
Air
Homogenous mixture
Where can you find all the elements?
The periodic table of elements
Definition of a compound
Composed of two or more elements in a definite ratio
What is a heterogeneous mixture?
A mixture that consists of visibly different substances that are not uniformly distributed.
What is a homogenous mixture?
A mixture that has the same proportions of its components. It is uniform throughout.
Sugar
Pure substance --> compound