The periodic table is made out of compounds.
An element is made out of:
One type of atom
More than one type of atom
An element and a compound is made out of more than one type of atom
Air is a compound
The periodic table has
more non-metals, they are on the right side
more metals, they are on the left side
more non-metals, they are on the left side
more metals, they are on the right side
Carbon dioxide:
CO2
C2O
H20:
water
hydrogen
MgO
Magnesium oxygen
Magnesium oxide
A molecule is made out of compounds
An atom is
the smallest particle of any substance
the smallest particle of any atom
In a compound, you can vary the amount of each substance
A compound:
Elements are joined and a separation is easy
Elements are not joined and a separation is easy
Elements are not joined and a separation is only possible by a chemical reaction
Elements are joined and separation is only possible by a chemical reaction
In a compound, the property is different from the elements it contains
In a mixture, you can vary the amount of each substance, the substances are joined and the substances are "easy" to separate.
Choose one answer here that is not a separation method.
Distillation
Density
Filtration
Evaporation
Chromatography
Extraction
In distillation and extraction, the difference is the ability to dissolve.
The difference in particle size
Difference in boiling point
Chromatography:
difference in boiling point
difference in the ability to dissolve
How many atoms fit on the point of a needle?
A billion
A hundred
Ten
A million
