![Chemistry](/tpl/images/cats/himiya.png)
Need answers asap! my science grade is at 84 and if i don't get it higher i'll be grounded in two weeks 11) a plastic ball floats on the water. what do you know about its density? a. the plastic ball has a density greater than water. b. the plastic ball has a density less than water. c. the water has a density less than the plastic ball. d. the plastic ball and the water have the same density. e. nothing can be determined about the density of the ball. 12) how do you know a chemical change has occurred? a. new bonds have formed or bonds have broken. b. the matter has had a change in state. c. the temperature has changed. d. all of the above e. only a and c are indicators of a chemical change. 13) if a chemical bond is formed or destroyed, what changes? a. energy is absorbed or released. b. protons are absorbed. c. neutrons will vary. d. energy is destroyed. e. protons are released.
![answer](/tpl/images/cats/otvet.png)
Answers: 1
Other questions on the subject: Chemistry
![image](/tpl/images/cats/himiya.png)
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:30, Hannahmiller3773
Connect the whole numbers on the periodic table to indicate what they represent?
Answers: 3
![image](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 18:00, jeepjose58
What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j
Answers: 1
Do you know the correct answer?
Need answers asap! my science grade is at 84 and if i don't get it higher i'll be grounded in two w...
Questions in other subjects:
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/himiya.png)
![Konu](/tpl/images/cats/geografiya.png)
Geography, 26.12.2019 04:31
![Konu](/tpl/images/cats/biologiya.png)
Biology, 26.12.2019 04:31
![Konu](/tpl/images/cats/geografiya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 26.12.2019 04:31
![Konu](/tpl/images/cats/fizika.png)
Physics, 26.12.2019 04:31
![Konu](/tpl/images/cats/en.png)