Which of the following is a pure substance? Choose all that apply. Choose 2.
A)Fruit juice?
B)nickel?
C)saltwater?
D)rust? (Fe2O3)
I think it is A and C
Nickel and saltwater.
Rust is made up of iron, copper, and trace amounts of gold. So it would be B and C.
sorry. Neither one, if by "pure substance" you mean an element.
Nickel is an element
Fruit juice = mixture
salt water = solution of NaCl and others in water
rust is a compound (oxide of iron) of iron and oxygen as they showed you Fe2O3 !
You have several really far out replies posted. Rusty Gold ????
Maybe I'm out of touch and need to go back to school.When I read this I consider rust (if Fe2O3) as a pure substance. Actually it isn't Fe2O3 either but a mixture of Fe2O3 and FeO. When I read nickel I read 5 cent piece and that isn't pure. I would chalk this up to a poorly worded question.
The correct answer is B and C. Not A.
To determine which of the options are pure substances, we need to understand what a pure substance is. A pure substance is a type of matter that has a constant composition and properties throughout.
Option A: Fruit juice is not a pure substance because it is composed of various components, including water, vitamins, sugars, and other compounds.
Option B: Nickel is a pure substance. It consists of only one type of atom, making it an element.
Option C: Saltwater is not a pure substance as it is a mixture of water and dissolved salt. The salt dissolves in the water, creating a solution with varying concentrations.
Option D: Rust (Fe2O3) is not a pure substance as it is a compound formed by the reaction of iron with oxygen. Compounds are made up of different types of atoms in specific proportions.
In conclusion, the correct choices among the given options are B (nickel) and D (rust). These are pure substances as they consist of only one type of element or compound.