Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Copper carbonate and hydrochloric acid experiment

29/11/2021 Client: muhammad11 Deadline: 2 Day

LAB EXPERIMENT 1

OBSRVATIONS OF CHEMICAL CHANGES

PURPOSE OF EXPERIMENT

The purpose of the experiments were to observe chemical changes on various chemicals. The experiment was to distinguish between burning and heating.

PROCEDURE

A few drops of hydrochloric acid were dropped in a product labelled sodium hydrogen carbonate. Silver nitrate solution was also reacted with aqueous sodium hydroxide solution.

Magnesium metal, zinc metal, copper carbonate and copper nitrate were heated in one experiment separately and then burned.

OBSERVATIONS

When sodium hydrogen carbonate was reacted with hydrochloric acid, there was no color change. However, bubbling and fizzling occurred. The test for starch with IKI indicator resulted in a blue-black color of the solution. Reaction of potassium iodide with lead nitrate solution produced a yellow color. When phenolphthalein indicator was added to a solution of sodium hydroxide, there was a color change to bright pink. The indicator did not result in any color change when it was added to hydrochloric acid.

Reaction of silver nitrate and sodium hydroxide resulted into a light brown, black starches. Silver nitrate reacted with aqueous ammonia, and the observation was a white and cloudy solution formed. When the solution was absorbed into a paper towel and exposed to sunlight, color changed to brown and rusty. When aqueous ammonia was reacted with copper (II) sulphate, a blue solution was formed.

Reactant A

Reactant B

Observation

sodium hydrogen carbonate

hydrochloric acid

No color change

bubbling and fizzling

Starch

IKI indicator

a blue-black color

potassium iodide

lead nitrate solution

yellow color

phenolphthalein indicator

sodium hydroxide

color change to bright pink

phenolphthalein indicator

Hydrochloric acid.

No color change

silver nitrate

sodium hydroxide

light brown, black starches

Silver nitrate

aqueous ammonia

a white and cloudy solution. When the solution was absorbed into a paper towel and exposed to sunlight, color changed to brown and rusty

copper (II) sulphate

aqueous ammonia

blue solution

Magnesium metal was silver and shiny. After heating, it glowed bright red and became a white ash. Zinc metal which is rock-like and silvery melted into liquid after heating. Copper carbonate turned black upon heating while copper (II) nitrate melted and turned green, and lots of fizzing and gas were released, it finally turned black, however.

Substance

Heating

Burning

Magnesium metal

glowed bright red and became a white ash

Glowed red, then turned into a bright white flame, then turned into ash

Zinc metal

melted into liquid

Melted into a liquid, glowed red

Copper carbonate

turned black

The flame glowed blue and the powder turned black

copper (II) nitrate

Melted and turned green, and lots of fizzing and gas were released, it finally turned black, however.

The flame glowed green, and the crystals bubbled and turned black

LAB ANSWERS

Exercise 1.

1. In order to test whether a lab product contained sodium hydrogen carbonate, a few drops of hydrochloric acid would be added. If there is fizzing and bubbling of a gas, the household product is then sodium hydrogen carbonate.

2. The chemical equation for reaction between silver nitrate and sodium hydroxide is:

3. The reaction which produced the products was the one between hydrochloric acid and sodium hydrogen carbonate. There was fizzing and bubbling of gas due to production of

4. Since the sample with a faint odor turned pink, I would say that it is sodium hydroxide. Vinegar is made up to acetic acid, and phenolphthalein doesn’t cause a color change in acids.

5. The fifth cookie brand which gives a yellow-brown color does not have as much starch as compared to the other brands.

6. In order to confirm presence or absence of lead, some drops of the hair tonic would be dropped into some potassium iodide. If the solution is yellow, then there is some lead in the hair tonic.

7. Cutting a cake into 8 pieces is a physical change. This is because no new substance is formed.

8. When soda is poured into glass and the soda bubbles, it is a result of chemical change. This is because a gas is released, meaning that a certain substance in the soda has transformed.

9. In well B1, specifically in the second step, the reactant was direct sunlight. This is a chemical reaction because it turned color of dark brown similar to rust on the paper towel meaning a new substance was formed.

10. Phenolphthalein acts well as an acid/base indicator. The observation in A5 do support this statement. This is because HCl doesn’t change whereas the base turns to pink.

Exercise 2

1. The similarities of burning and heating magnesium are that there was a chemical change, resulting in the metal burning and producing ash. The difference is that when burned, magnesium burst into a bright white light while heating it made it to glow red and turn into ashes.

2. There were no differences observed in heating and burning of zinc metal. There was chemical change in burning since it only melted into a liquid.

3. Heating copper carbonate turned the powder into black and a powder was released. Burning it also resulted into formation of a black substance. There was a chemical change in both heating and burning.

4. Heating and burning copper nitrate was exactly the same. However, a glowing flame was absent when heating. There was a chemical change in burning.

5. The differences between heating and burning are that heating adds thermal energy while burning is a chemical reaction called oxidation.

6. Chemical producing a physical change was mossy zinc (it melted into liquid.

CONCLUSIONS

When two chemicals react, a product is formed and the two chemicals are said to have undergone a chemical change. This is because they have been transformed. Physical change only involves change of state. Chemicals react differently to both heating and burning. More differences are observed when heating the chemicals, however.

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Top Writing Guru
Academic Mentor
Instant Assignment Writer
Finance Master
Assignments Hut
Premium Solutions
Writer Writer Name Offer Chat
Top Writing Guru

ONLINE

Top Writing Guru

I will be delighted to work on your project. As an experienced writer, I can provide you top quality, well researched, concise and error-free work within your provided deadline at very reasonable prices.

$46 Chat With Writer
Academic Mentor

ONLINE

Academic Mentor

I can assist you in plagiarism free writing as I have already done several related projects of writing. I have a master qualification with 5 years’ experience in; Essay Writing, Case Study Writing, Report Writing.

$42 Chat With Writer
Instant Assignment Writer

ONLINE

Instant Assignment Writer

Being a Ph.D. in the Business field, I have been doing academic writing for the past 7 years and have a good command over writing research papers, essay, dissertations and all kinds of academic writing and proofreading.

$20 Chat With Writer
Finance Master

ONLINE

Finance Master

I am a PhD writer with 10 years of experience. I will be delivering high-quality, plagiarism-free work to you in the minimum amount of time. Waiting for your message.

$48 Chat With Writer
Assignments Hut

ONLINE

Assignments Hut

As per my knowledge I can assist you in writing a perfect Planning, Marketing Research, Business Pitches, Business Proposals, Business Feasibility Reports and Content within your given deadline and budget.

$36 Chat With Writer
Premium Solutions

ONLINE

Premium Solutions

This project is my strength and I can fulfill your requirements properly within your given deadline. I always give plagiarism-free work to my clients at very competitive prices.

$39 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Pressure relief device medical - Proactiv target market - ACCOUNTING SHORT ANSWER - Best case complexity of selection sort - Urgent Small Discussion due in 2 hours - Why did kentucky fried chicken change to kfc - Salvation army international mission statement - Passive voice in lab reports - The most common circumstance for project closure is simply a - Sara smilansky stages of play - Some researchers believe that business firms moving towards ecological sustainability results in: - Discussion due in 16 hours - Riverside state hospital - The lost camel a folktale from india central message - Moreton bay pd online - 7.12 unit assessment looking back and ahead part 1 - Explain the following - Java fundamentals a comprehensive introduction by herbert schildt pdf download - Atomic energy application form - Morality and moral controversies 9th edition ebook - Program to convert hexadecimal to decimal in java - First class levers examples - Drawasaurus how to play - What medisoft database contains the unique chart numbers of patients - A child of hitler alfons heck pdf - The cruelest sport exploring the text answers - Ionic species are most soluble in - How are insects distinguished from other hexapods - Health related components of fitness - Caloric content of food lab - New practice approaches in nursing - Consolidated contractors energy development - Specification for highway works - Inequality - Assignment 2 social control and criminal deviance bullying - Cloud computing 5 - Liberty university letter of recommendation - Don t pat the wombat worksheets - Hager spd wiring diagram - Sunny garcia surfing ps2 soundtrack - I need 4 answer for four questions on scholar about CFM - Pos ch 1 - Brize norton flight information - Aplia access code free - Literature Analysis Paper - Dutton park neighbourhood plan - Godfreys campbelltown superstore campbelltown - What is the empirical formula of hydrogen peroxide - Manifest destiny - The wedding dress industry is monopolistically competitive. as a result: - Animal farm lesson plans - 7 Discussion Board: Evolution, Malaria, and Mosquitoes - Codes and conventions in film - Bridge to terabithia drawings - How starbucks growth destroyed brand value - LITERATURE - What assumption did you make about the reaction of kmno4 - How to find incremental profit - Dracula chapter 11 summary - Price of coke in 1970 - St george eftpos machine - Lo - The benefits of music education by laura lewis brown - Discussion question: Leadership Strategy - Penn foster biology research paper example - Case study - Accounting for managerial decisions mcq - Madden corporation manufactures t shirts - Papergraders - Rey paz contreras sculptures - HomeWork and Project - Career development interventions 5th edition apa citation - Initiating the Project - Problem Set 7 - Valerian and lemon balm for adhd - Give em the pickle 4 principles - How to calculate forward resistance of diode - Models used for multigenerational family health histories - INT Wk 2 DQ 1# - Colonial remnants - Dobry die & mold inc enters into a contract - Pursuit Of Happiness - Fantastic in film & television must have saw the movie "Wizard of OZ" 1939 - Consumer behavior a strategic approach - Cell transport webquest worksheet answer key - Models for writers 12th edition answers - Star river electronics case solution - Leica disto d5 specifications - Fsb-200s beam detector manual - Case study on leadership styles pdf - Widespread acceptance of the great sport myth leads people to - Sdro enf order payment - Pizza hut hk menu pdf - Corporate level strategies of victory motorcycles - Leadership theories matrix ldr 300 - Module data analysis line of best fit - Cheadle catholic junior school - Accumulated depreciation and depreciation expense are classified respectively as - Stream of consciousness in araby - 2009 methods exam 2 solutions - Aggregate to atar table 2016