Read the list of sentences from the article.
In a physical change, the material involved is structurally the same before and after the change.
A piece of metal may be heated in a fire until it glows, but the metal is the same material before heating and after cooling.
Chemical changes require the breaking and forming of chemical bonds during a chemical reaction.
The creation of a new, solid substance from two liquid substances indicates that a reaction has taken place that has altered the original substances.
Which two sentences, taken together, provide the BEST evidence to support the idea that both physical and chemical changes can significantly change the appearance of a substance?
Answers: 1
Chemistry, 21.06.2019 23:00
What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?
Answers: 2
Chemistry, 22.06.2019 00:00
1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division
Answers: 1
Chemistry, 22.06.2019 09:20
Give the orbital configuration of the phosphorus (p) atom.
Answers: 1
Chemistry, 22.06.2019 12:00
Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon
Answers: 2
Read the list of sentences from the article.
In a physical change, the material involved is struct...
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