Chemistry, 02.09.2019 15:30 MaeWolfe

Which material is a pure substance?
a) alloy
b) compound
c) mixture
d) solution

Answers: 1

Show answers

Answers

The answer is B. The material that can be considered as a pure substance is the compound. A pure substance is defined as a material that is only composed of one substance. The other choices given are mixtures where there are two or more different substances in a material.

Answer from: sascsl7973

B) compound is a pure substance

Further explanation

A pure substance can be an element or compound.

The element is a single substance that cannot be broken down anymore or the simplest substance.

While the compound is a pure substance that is formed from a combination of two or more elements through chemical reactions and has a constant chemical ratio.

A mixture is a combination of two or more single substances. The properties of the mixture component are not lost / unchanged as in compounds.

The mixture can be divided into a homogeneous mixture if the composition / ratio of each substance in the mixture is the same and heterogeneous mixture if the ratio of the composition of the substances is not the same (can be varied) in each place.

Mixtures can also be divided into solutions, suspensions and colloids based mainly on the size of the particles

A) alloy

alloy is a mixture of elements that have metal properties

B) compound

Compounds are represented in chemical formulas which can be separated into their constituent elements by chemical processes

C) mixture

can be separated by physical or mechanical means, the composition can be changed depending on the proportion of pure substances that form it

D) solution

Solution is: a mixture of two or more substances consisting of a solute and a solvent. The particle size of the solution is very small, less than 1 nm.

Learn more

A heterogeneous mixture

link

a homogeneous mixture

link

an example of a physical change

link

Answer from: Quest

Distance and velocity graph

Answer from: Quest

Ethene molecular fórmula= c2h4molecular weight = 29.046g/molhope it : )

Another question on Chemistry

Chemistry, 22.06.2019 03:40

Can someone me with questions 15 to 17 plz.

Answers: 1

Answer

Chemistry, 22.06.2019 13:40

Can someone me with 6 to 10 plz this is for masteries test.

Answers: 1

Answer

Chemistry, 22.06.2019 17:40

Areaction in which products can react to re-form reactants is

Answers: 1

Answer

Chemistry, 22.06.2019 21:30

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

Answers: 2

Answer

You know the right answer?

Which material is a pure substance?
a) alloy
b) compound
c) mixture
d) s...

Questions