Chemistry Middle School

How is a mixture different from a pure substance?


A) Mixtures can be separated by physical means.

B) A pure substance is heterogeneous.

C) Pure substances are made up of mixtures.

D) A mixture is made of one substance.

Answers

Answer 1

Explanation:

Neani madhungo haya thoho I a teaho

Answer 2
B, A pure substance is heterogeneous

Related Questions

List the five physical phase changes of matter and give one example for each.

Answers

Answer:Melting.

Freezing.

Evaporation.

Condensation.

Sublimation.

Explanation:

Answer: Examples for the five transformations previously given.

For the first four, we encounter common examples in everyday life, all to do with water:

Freezing - liquid to solid, e.g. water to ice, e.g. making ice cubes.

Melting - solid to liquid, e.g. ice to liquid water, melting ice cubes or snow flakes.

Condensation - gas to liquid, e.g. water vapor (gas) to liquid -  water vapor in air (humidity) condenses to form liquid droplets on the outside of a cold beverage glass on a hot humid day; or cloud formation  in the atmosphere.

Evaporation - liquid to gas, e.g. liquid water on clothes evaporates as clothes dry on clothesline or in dryer

While water can sublime under certain conditions of temperature and pressure, it is less evident in everyday life.  Carbon dioxide however is a more common example.

Sublimation - solid to gas, e.g. "dry ice" disappearing. The visible smoke associated with dry ice is most likely just condensing water vapor in the air as the solid carbon dioxide cools the air.

Explanation:

What is the number above each symbol in the periodic table?
A.atomic number
B. chemical symbol
C.atomic mass
D.none of the above

Answers

A. Atomic Number is the answer.

Answer:

atomic number

Explanation:

there are 118 elements. Some tables includes on the right side of the symbol is the atomic mass.

Hope this help. :)

A cup of coffee is considered a _______.

A) precipitate
B) solute
C) solution
D) solvent

Answers

Answer:

C) solution

Explanation:

Solution is made of solute and solvent. Here coffee beans are solute and hot water is solvent when combined in right proportions make the coffee, a solution.

C-solution hope this helps i hade the question my self
Other Questions
which factor is likely to have the most influence on the accuracy and completeness of the information obtained from the patient during the medical history? What is a clause Grade 7? which sales promotion tool drove much of the success that the tobacco industry enjoyed during the first and second world wars? You are playing a card game. When you finish the game,you receive one point for each card you played and lose two points for each cardremaining in your hand. You finish the game before three of your friends finish, soyour score is tripled. What is your final score if you play 18 cards and have 2 cardsleft in your hand? raquel wants to make a rectangular garden with a area of 12m, but using the least amount of fencing. Each has to be a whole (ie not decimals). What will the dimensions of the garden be? as captain of the soccer team, your primary concern is winning games and maintaining the strength of the team. your players couldn't care less about teamwork and just want to win. which component of leadership would you recommend the leader focus on? group of answer choices roles process influence common goals A car travel from A to town B 145km distance in 3hrs 45min. Find it's average speed (a) in km/hr (b) in m/s Which of the following correctly displays the four fundamental forces in terms of increasing magnitude?A. Electromagnetic force, gravity, weak nuclear force, strong nuclear forceB. Gravity, electromagnetic force, strong nuclear force, weak nuclear forceC. Weak nuclear force, gravity, strong nuclear force, electromagnetic forceD. Gravity, weak nuclear force, electromagnetic force, strong nuclear force You weigh 650 N.What would you weigh if the Earth werefive times as massive as it is and its radiuswere five times its present value?Answer in units of N. In what wealthy and powerful italian city, ruled by the medici family, did the renaissance get its start? The decline in political efficacy in the United States isA)unlikely to matter at all for the functioning of American democracy because America's constitutional form of limited government is so well established.B)likely to have negative effects on American democracy because it will lead to less citizen participation in government.C)likely to have negative effects on American democracy because it will lead to more citizen participation in government.D)likely to have positive effects on American democracy because it will lead to more citizen participation in government. 3 Cu 8HNO3 --> 3 Cu(NO3)2 2 NO 4 H2O In the above equation how many moles of water can be made when 158.4 grams of HNO3 are consumed? the speed limit on some interstate highways is roughly 135 km/h. (for each answer, enter a number.) (a) what is this in meters per second? m/s (b) how None of the answers I got is an answer choice natural selection can be summarized by which statement? group of answer choices within a population, some variations are favored by environmental conditions and others are not none of the answers are satisfactory all species are fixed organisms transform and pass these transformations on to their offspring within the who statistical information system, what do the categories morbidity and mortality, risk factors, health service coverage and health system resources relate to? What characters are in chapter 1 of Jekyll and Hyde? . question 1 why is it important for a data analyst to document the evolution of a dataset? select all that apply. which characteristic that is associated with advertising creates situations where marketers do not get a second chance to make an impression on recipients? Directions: Use the Law of Sines to find each missing side or angle. Round to the nearest tenth.