Question 1
compounds can be separated by
chemical means.
physical means.
boi...
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.
Answers: 1
Physics, 22.06.2019 11:30, emilyplays474
In a good thermo flask the main cause of heat loss is
Answers: 1
Physics, 22.06.2019 19:00, helpmegraduate40
1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engineβs effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)
Answers: 1
Physics, 22.06.2019 19:30, barstr9146
How many electrons in an atom could have these sets of quantum numbers? =3n=3 electronselectrons =4,β=2n=4,β=2 electronselectrons =6,β=β=β1n=6,β=2,mβ=β1
Answers: 3
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