Physics

Physics, 31.08.2019 15:30, allieballey0727

In which step(s) did a chemical change most likely occur?

answer

Answers: 1

Show answers

Similar questions

Предмет

Physics, 28.06.2019 16:30, buky0910p6db44

Nvestigations were carried out in a science lab to explore the topic of chemical and physical changes. investigation a step 1. add 5 tsp. salt to 100 ml warm water and stir until most or all of the salt is no longer visible. step 2. heat the salt solution on a burner until only a white solid remains. investigation b step 1. mix 10 tsp. white sugar into 100 ml water and stir until most or all of the sugar is no longer visible. step 2. heat the sugar solution on a burner until the solution thickens and turns brown. in which step(s) did a chemical change most likely occur?

Answers: 1

Предмет

Chemistry, 21.07.2019 06:00, kodaxmodz

While studying chemical and physical changes, students added salt to a glass of water. they stirred the salt until it dissolved and could no longer be seen. "that's a chemical change," sarah stated. do you agree? explain. a) yes, it is a chemical change because something new is formed. b) no, it is a physical change. it is salt and water and you can get the salt back by boiling off the water. c) yes, it is a chemical change because there was a change in the appearance of one of the components, the salt. d) no, it is a physical change. a chemical change cannot occur when you mix two compounds together like salt, nacl, and water, h2o, without adding heat.

Answers: 2

Предмет

Chemistry, 14.10.2019 15:20, emmasandberg182

Astudent performs the following experiment. step 1: she pours a colorless solution into a beaker that contains another colorless liquid. yellow particles appear in the liquid. step 2: she lets the yellow particles settle in the beaker and then separates the colorless liquid by decantation. what has most likely occurred in the beaker? a chemical change in step 1 and a physical change in step 2 a physical change in step 1 and a chemical change in step 2 chemical changes in both step 1 and step 2 physical changes in both step 1 and step 2

Answers: 1

Предмет

Chemistry, 04.11.2019 19:31, ri069027

In this activity, several changes will be made to samples of matter. your challenge will be to decide if the change is physical or chemical. you will also have to defend your choice. remember that when a physical change occurs to a substance, the identity of the substance and its physical properties do not change. however, when a chemical change occurs to a sample, the original material is converted to a new form of matter. this substance has a unique set of physical and chemical properties. write a summary paragraph discussing this experiment and the results. use the following questions to guide the content of your paragraph. submit your recorded observations for each step. step 1: burning candle - record the mass and write your observations step 2: cooling candle - record the mass and write your observations step 3: tearing paper - record your observations step 4: wet paper - record your observations step 5: burning pieces of paper - record your observations step 6: salt and water in test tube - record your observations step 7: baking soda and vinegar - record your observations answer the following questions. what is the difference between a physical change and a chemical change? what kind of change occurred in each test? what evidence do you have to support your decision? be brief, but be sure to defend your conclusion with data.

Answers: 3

Do you know the correct answer?

In which step(s) did a chemical change most likely occur?...

Questions in other subjects:

Konu

History, 17.11.2019 11:31

After this raid, all of tho b-25 bombors had to crash land in china because the aircraft carriors were not long enough for them to land on....

Konu

English, 17.11.2019 11:31

7. what rules were created for the discussion? were they followed?...

Konu

Arts, 17.11.2019 11:31

Someone ! i’ll mark you the brainest...

Konu

Mathematics, 17.11.2019 11:31

Acompany spends a total of $64,500,000 on salaries for its workers. if the company has 1.5 3 103 workers, what is the average salary per worker?...

Konu

Mathematics, 17.11.2019 11:31

By the time the park officials finished introducing frogs into the park, the frogs had multiplied to a staggering population of 2.56×10^6 . what is that number written...

Konu

Mathematics, 17.11.2019 11:31

X≥3 graph graph not a number line a graph...

Konu

English, 17.11.2019 11:31

The student needs to find additional sources that contain similar, accurate information about her topic. choose two sources that most likely contain information that accurately sup...

Konu

Chemistry, 17.11.2019 11:31

How many moles of cao will be produced from 23.9 g of ca? 2ca(s) + o2(g) – 20: 0(3)mol...

Konu

Social Studies, 17.11.2019 11:31

Why should a constitution be written as per the will and expression of people write three reasons...

Konu

Mathematics, 17.11.2019 11:31

What is the numeral expression for 31 more than 14...

Other tasks in the category: Physics More task