my cards Flashcards
(17 cards)
what is a compound?
a compound is where 2 atoms or more are combined.
what is a mixture?
a mixture is where there are 2 or more substances are mixed together but are not chemically bonded
what is an element?
a substance composed of a single kind of atom.
who made the periodic table?
mendeleev
what is an scientific word for burning?
combustion
how long did it take to make the periodic table?
over a year
when i use hydrogen and oxygen,what do i make?
water
how many groups are in the periodic table?
there are 8 groups in the periodic table
when we burn hydrocarbons, what do we usually get
carbon dioxide and water
what is combustion?
rapid chemical reaction between a substance and oxygen,involving the production of heat and light
what is H2O?
water
what is the smallest particle?
an atom
where do you find metals on the periodic table?
on the left
what are the 2 things that make carbon dioxide?
carbon and oxygen
what do we need to burn stuff?
oxygen
when you add iron and sulfur what do we get?
iron sulphide
what are the 3 thing the we need to keep fire going?
oxygen,heat and fuel
