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An Introduction to Chemistry
https://preparatorychemistry.com
This is the website that supports An Introduction to Chemistry by Mark Bishop published by Chiral Publishing Company.
https://preparatorychemistry.com
An Introduction to Chemistry
This is the website that supports An Introduction to Chemistry by Mark Bishop published by Chiral Publishing Company.
No 301 redirects are in place to redirect traffic to your preferred domain. Pages that load successfully both with and without www. are treated as duplicate content! Not all versions of your page point to the same URL.
| URL | Resolved URL |
| http://preparatorychemistry.com | https://preparatorychemistry.com/ |
| https://preparatorychemistry.com | https://preparatorychemistry.com/ |
| http://www.preparatorychemistry.com | Error 503 Service Unavailable |
| https://www.preparatorychemistry.com | SSL certificate's common name is invalid |
| Attribute | Value |
| ⓘ author | Mark Bishop |
ⓘ The owner has associated the following topics to the website.
ⓘ The results of our semantic analysis are shown below using the website's language.
They are the main concepts covered by preparatorychemistry.com.
Each concept has a confidence score. The higher it is, the more important the topic is relative to the page.
| Topics | |
Chirality (chemistry) Confidence: 74% 
|
|
Chemistry Confidence: 71%
|
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Mark Bishop Confidence: 69%
|
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Publishing Confidence: 69%
|
❌ preparatorychemistry.com website speed is slow. Page speed is important for visitors and search engines.
Get insights to improve your page loading time.
This domain loads at the median speed of 0.3 seconds.
preparatorychemistry.com is faster than approximately 97 percent of the web. Your website page speed needs to be as fast as you can make it, without compromising the customer experience.
A good goal to achieve is a loading time of 2 seconds on desktop and mobile devices.
ⓘ This website is ranked #379.875 by Alexa.
This rank is traffic based. The lower the rank is, the better the domain is ranked.
| Country | Rank |
 United States of America |
#97.177 |
Mobile Rendering
This website doesn't seem to be optimized for Mobile Visitors.
Phone
Tablet
A good text to HTML ratio is anywhere from 25 to 70%.
This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information.
Great, we found headings on this page.
However, you have not defined a top level heading, or <H1>. It is used to define the most important heading.
We recommend using one top level heading to set up a semantic relationship between that heading and the remainder of the content on a page. It clearly describes to the readers and the search engines what it is about.
| 3rd level heading |
| Links |
| 5th level heading |
| Two versions |
| Webassign |
| E-book |
We found 13 images on this website.
13
ALT attributes are missing on your image tags.
| Image | Image URL | Occurrences |
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images/chiral_logo_web.png | 1 |
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images/image1.jpg | 1 |
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images/image12.jpg | 1 |
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images/image11.jpg | 1 |
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images/image3.jpg | 1 |
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images/image2.jpg | 1 |
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images/image4.jpg | 1 |
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images/image5.jpg | 1 |
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images/image6.jpg | 1 |
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images/image7.jpg | 1 |
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images/image8.png | 1 |
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images/image9.jpg | 1 |
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images/image10.jpg | 1 |
Alternative text allows you to add a description to an image.
Google rely on alternative text attributes to determine relevance to a search query. Alternative text also makes an image more likely to appear in a Google image search.
It looks like you're missing alternative text for 13 images on preparatorychemistry.com. Check your website to make sure it's specified for each image on the page.
| Anchor | Type | URL |
| Home Page | text | default.htm |
| Atoms-first | text | bishop_atoms_first.htm |
| Chemistry-first | text | bishop_chemistry_first.htm |
| Atoms-first eBook | text | bishop_ibook.htm |
| Chemistry-first eBook | text | bishop_ibook_cf.htm |
| Animations | text | bishop_animations.htm |
| Tutorials | text | bishop_tutorials.htm |
| Glossary Quizzes | text | bishop_glossaries.htm |
| Online Lectures | text | bishop_lectures.htm |
| Chapter Maps | text | bishop_chapter_maps.htm |
| PowerPoint | text | bishop_powerpoint.htm |
| Molecules | text | bishop_molecules.htm |
| Checklists | text | bishop_checklists.htm |
| Audio Presentations | text | bishop_audio_book.htm |
| Store | text | bishop_payment.htm |
| contact | text | bishop_contact.html |
| Get Information | text | bishop_info.htm |
| Buy textbook | text | bishop_payment.htm |
| Atoms-first PDF/tools | text | bishop_atoms_first.htm |
| Chemistry-First PDF/Tools | text | bishop_chemistry_first.htm |
| Atoms-First e-book | text | bishop_ibook.htm |
| Chemistry-First e-book | text | bishop_ibook_cf.htm |
| Glossary quizzes | text | bishop_glossaries.htm |
| Website tour | text | bishop_tour.htm |
| Textbook strengths | text | bishop_chemistry_strengths.htm |
| Atoms-First Version | text | bishop_atoms_first.htm |
| Chemistry-First Version | text | bishop_chemistry_first.htm |
| more info | text | bishop_versions.htm |
| Atoms-First | text | bishop_ibook.htm |
| Chemistry First | text | bishop_ibook_cf.htm |
| Home | text | default.htm |
| About | text | bishop_about.htm |
| Contact | text | bishop_contact.html |
| Tour | text | bishop_tour.htm |
| Strengths | text | bishop_chemistry_strengths.htm |
| Chapter maps | text | bishop_chapter_maps.htm |
| Audio Book | text | bishop_audio_book.htm |
| Anchor | Type | URL |
| WebAssign Info | text | http://webassign.net/bishop |
| more info | text | http://webassign.net/bishop |
| ⓘ Domain Registrar | 1&1 IONOS SE |
| ⓘ Registration Date | 12/01/2005 18 years, 4 months, 18 days ago |
| ⓘ Last Modified | 12/02/2018 5 years, 4 months, 18 days ago |
| ⓘ Expiration Date | 12/01/2019 Expired |
| Domain |
Others (43.5%)
Germany
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