Chemistry

Chemistry, 17.10.2019 11:30, Tnguyen8160

Which observation does not indicate that a chemical reaction has occurred?

Which observation does not indicate that a chemical reaction has occurred?

answer

Answers: 3

Show answers

Similar questions

Предмет

Physics, 16.07.2019 00:00, bestielove7425

Ascientist compares two samples of white powder. one powder was present at the beginning of an experiment. the other powder was present at the end. she wants to determine whether a chemical reaction has occurred. she finds that neither sample bubbles or dissolves in water. she measures the mass and volume of the solids. sample one has a volume of 45 cm3 and a mass of 0.5 g. sample two has a volume of 65 cm3 and a mass of 1.3 g. what should the scientist conclude? a)the samples have the same color, so no chemical reaction has occurred. b)the two samples do not react with water, so no chemical reaction has occurred. c)the densities of the samples are different, so a chemical reaction has occurred. d)the densities of the samples are the same, so no chemical reaction has occurred. e)the densities of the samples are different, so no chemical reaction has occurred.

Answers: 1

Предмет

Chemistry, 19.10.2019 00:00, simmonsl7790

Mr. peters’ class conducted a fun experiment during class. for homework, jason had to analyze the data and make a conclusion. what should jason conclude? observations_ a cloudy white substance is formed, tiny bubbles forming at the top, a sweet odor. a.several chemical changes occurred. i conclude that no chemical reaction occurred. b.several chemical changes occurred. i conclude that a chemical reaction took place. c.several chemical and physical changes took place. i conclude that there was no chemical reaction. d.several physical changes occurred. i conclude that a chemical reaction took place

Answers: 3

Предмет

Physics, 28.10.2019 17:31, heroicblad

Select the correct answer. a scientist compares two samples of white powder. one powder was present at the beginning of an experiment. the other powder was present at the end. she wants to determine whether a chemical reaction has occurred. she finds that neither sample bubbles or dissolves in water. she measures the mass and volume of the solids. sample one has a volume of 45 cm3 and a mass of 0.5 g. sample two has a volume of 65 cm3 and a mass of 1.3 g. what should the scientist conclude? a. the samples have the same color, so no chemical reaction has occurred. b. the two samples do not react with water, so no chemical reaction has occurred. c. the densities of the samples are different, so a chemical reaction has occurred. d. the densities of the samples are the same, so no chemical reaction has occurred. e. the densities of the samples are different, so no chemical reaction has occurred

Answers: 2

Do you know the correct answer?

Which observation does not indicate that a chemical reaction has occurred?
...

Questions in other subjects:

Konu

Mathematics, 01.12.2020 14:10

If the probability is 0.65 that a marriage will end in divorce within 20 years, what is the probability that out of 7 couples just married in the next 20 years (A) None will be d...

Konu

Physics, 01.12.2020 14:10

Which of the following does NOT determine the resistance of a wire...

Konu

English, 01.12.2020 14:10

Hello children I need an essay that analyzes the use of poetry in Through the Looking-Glass. It has to be over 150 words so if y'all could help that would be cool !...

Konu

Biology, 01.12.2020 14:10

Use structural formulas to show the formation of (a) a dipeptide, (b) maltose....

Konu

Business, 01.12.2020 14:10

Warm-Up Teresa is considering purchasing a home for $220,000 by taking out a loan with an interest rate of 4.3% for 30 years. What would her monthly payment be? Use th...

Konu

English, 01.12.2020 14:10

How is a stem helpful to a Plant? a. It brings water and minerals to the leaves b. It gives the plant oxygen c. It makes the plant green

Konu

Chemistry, 01.12.2020 14:10

Helium and methane, CH4, are both found in natural gas and can be separated by diffusion. What is the ratio of the diffusion rates for the two species? (rate of diffusion for He di...

Konu

Physics, 01.12.2020 14:10

A 2.4kg block sliding on a rough horizontal surface is attached to one end of a horizontal spring ( k=188/m) which has its other end fixed. The block passes through the equilibrium...

Konu

Chemistry, 01.12.2020 14:10

Explain how mixture melting points can be helpful in distinguishing between two compounds that have essentially the same melting point....

Konu

Biology, 01.12.2020 14:10

Write the word equation for the dehydration synthesis of two amino acids....

Other tasks in the category: Chemistry More task