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Based on the number of protons, what atom is this a picture of ?
The picture illustrates a substance of
An Element and a Compound
What are the three states of matter? (check all)
Earth's atmosphere is primarily composed of which gases?
hydrogen, helium, oxygen, and argon
nitrogen, oxygen, argon, and carbon dioxide
nitrogen, hydrogen, argon, and carbon dioxide
helium, hydrogen, oxygen, and carbon dioxide
Two or more elements chemically combine to form a
Rust is a compound with the formula Fe2O3. Which elements combine to form rust?
iron and water
iron and oxygen
iron and air
iron and acid
What makes the atoms of two different elements different?
number of electrons
number of protons
number of neutrons
number of ions
O, Na, and S, are examples of
What are the products of the chemical reaction pictured?
CH4 and CO2
CH4 and O2
CO2 and H2O
O2 and H2O
Chemical or Physical:
Color, shape, texture, and luster are all examples of _______________ properties of matter.
The ability of matter to change when heated is a _____________.
The Law of Conservation of Mass says that matter can neither be __________ or __________.
Which contains a solid? (Choose all)