Question 1
compounds can be separated by
chemical means.
physical means.
boiling.
pressure.

question 2
oxygen, sulfur and tungsten are all examples of what type of matter?
compound
element
heterogeneous mixture
solution

question 3
a substance that has a uniform composition and is able to be separated by physical means is a(n)
solution.
heterogeneous mixture.
element.
compound.

question 4
which of the following can-not be separated by physical means?
mixtures
solutions
elements
none of the above.

question 5
which of the following is a solution?
steel
milk
plastic
water

question 6
a homogenous mixture of two or more substances is known as a(n)
element.
compound.
solution.
atom.

question 7
which of the following is an example of a heterogeneous mixture?
water
salt water
dirt
brass

question 8
which of the following is not an example of separation by physical means?
distillation
sublimation
boiling
electrolysis

question 9
describe a procedure to separate a mixture of salt, sand, and water.

question 10
list two ways in which heterogeneous mixtures differ from elements.

question 11
how do scientists distinguish between an element and a compound? list two elements and two compounds.