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

Ammonium nitrate flame test color

19/11/2021 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:

Instant Homework Helper
Quick N Quality
Professional Accountant
Innovative Writer
Top Essay Tutor
Helping Hand
Writer Writer Name Offer Chat
Instant Homework Helper

ONLINE

Instant Homework Helper

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.

$40 Chat With Writer
Quick N Quality

ONLINE

Quick N Quality

I will provide you with the well organized and well research papers from different primary and secondary sources will write the content that will support your points.

$42 Chat With Writer
Professional Accountant

ONLINE

Professional Accountant

I have assisted scholars, business persons, startups, entrepreneurs, marketers, managers etc in their, pitches, presentations, market research, business plans etc.

$44 Chat With Writer
Innovative Writer

ONLINE

Innovative Writer

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.

$23 Chat With Writer
Top Essay Tutor

ONLINE

Top Essay Tutor

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.

$15 Chat With Writer
Helping Hand

ONLINE

Helping Hand

I am an elite class writer with more than 6 years of experience as an academic writer. I will provide you the 100 percent original and plagiarism-free content.

$24 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

Which form of salvation is emphasized in the new testament - Economics is best described as the - Dsm 5 diagnosis decision tree - Vision mission and goals of coca cola company - RESEARCH METHODOLOGIES AND INQUIRY - Characteristics of a dystopian society - Compare and contrast essay of Followership and Servant Leadership - Apple store burlington mall genius bar appointment - Yellow belly black snake north queensland - Happy endings margaret atwood analysis - Music man wiring diagram - Glasgow enterprises started the period - 230 bus route map - Lead - Http www gly uga edu railsback cs csindex html - West common lane doctors - We are only what we always were page number - InfoTech Import in Strat Plan (ITS-831) - General motors brazil service parts business - PSY 7-2 - A collection of 108 coins containing only quarters and nickels is worth $21. - Our vanishing night - For Guru Olivia Only - Airmic risk management standard - Charing cross bridge by andré derain - Martha stewart public relations - St james church alnwick - Eco 372 principles of macroeconomics - Circuit breaker ratings chart - Discuss Question - What technique would you use to separate sand from water - Bob bonner leaving magic 98 - HIV/AIDS - Aviary plans free download - Business Finance - Bi assignment 9 - +91-8306951337 get your love back by vashikaran IN Maheshtala - Climograph biomes - Discussion - Masters, Research & Writing, Human Resources Management - Under armour net worth 2018 - Online Exam - Eco 561 week 4 business proposal paper - Vision board worksheet for students - 3.2 1.9 packet tracer answers - 70 000 000 000 - Research Review - Rosemarie rizzo parse date of death - What characteristics would make an encryption absolutely unbreakable - Philosophy of law 9th edition pdf - Summary on this article "why willpower is overrated" - Miller corporation has a premium bond making - Mr jason harvey spinal surgeon - GLOBAL HEALTH - Market position map for alamo drafthouse - The great person theory - Research paper 6 - Cost accumulation job order costing - General reading practice test 5 - 3 spheres of project management - Essay - Can someone do my Week 1 work for me Discussion 1 & 2 and in Organizational Behavior? - Market share simulation - Guitar amp settings guide - Ruby tuesday code of conduct - Isbn 10 1 305 38983 2 - Waste management audit checklist - Case Study - Intro to the Business Continuity Plan - Digital notice board using raspberry pi pdf - Advantages of iec 61850 - Mi cable in conduit - Components of starting system - Cmc vellore appointment for international patients - Chicken little readers theater - Play therapy uk register - Tottenham investments v carburettor services - Neonatal jaundice case study answers - Discussion 7 - Factory farming ielts essay - Triple aim of health reform - Pfa post test answers - Tricia hussung - Ethical issues with milgram's experiment - Disconnect and reconnect course - Big Data and Blockchain Technology - Fitness first strategy - Wbs for a coffee shop - Asthma soap note example - Reading Recommendations - Nimble storage founders - For all work solver - Biology vce past exams - Discussion - Intended only for brilliant answers - The book thief overview - Eastman dental hospital referral form - Moreton bay green waste bin - What are a4 envelopes called - Financial management challenges and ethics