Session 1.1 Quick Check
1. A hypertext document is a document that has been linked with other documents and organized in a way that gives the reader control over the order in which the information is presented. 
2. A Web server stores web pages and then makes them available to users on the network. A web browser is the software program the user uses to view a web page. The web browser grabs the web pages from the server to display them.
3. HTML stands for Hypertext Markup Language, and is the language commonly used to design web pages and used to describe the documents content and structure. 
4. HTML documents are deisnged in a markup language while word documents just contain words for someone to read. The HTML document is a description of what the web browser is supposed to create and display to the user.
5. HTML extensions are changes to the language that can make it more flexible and give the programmers more options, but they make creating the website much more complicated.
6. Any simple text editing program will work with HTML such as Windows Notepad but programs known as HTML converters and HTML editors can also help in designing your documents.

Session 1.2 Quick Check
1. The heading and the body are the two main sections in an HTML document.
2. Empty elements are elements that employ one-sided tags and contain no content.
3. <h1 style="text-align: center">Chemistry Classes</h1>
4. A block-level element is something that is set apart from the other blocks and displayed in a different section. Inline elements are part of the same block as its surrounding content.
5. White space/Blank space is treated as just a single space in HTML documents, so a whole line would be translated into a single blank space.
6. Presentational attributes specify exactly how a browser should render an element. You should only use them when trying to go backward to an older browser because they are a depecated attribute being replaced by styles.
7. style="list-style-type: upper-roman"
8. style="list-style-image: url(ball.gif) inside"
9. A logical element describes the nature of the content but not how the content should appear. A physical element controls how the content of the document should appear on the page. A physical element would be best for a non-visual browser because with it the author can make the content of the doucment appear in Braille format.

Session 1.3 Quick Check
1. An inline image is an inline element that displays a graphic located in a seperate file within the contents of a block-level element. 
2. With the alternate attribute if the image does not display then the reader can tell what the image would tell you if it did appear. 
3. <p style="text-algin: center"><img src="logo.jpg" alt="Chemistry Web Page"/></p>
4. <hr style="color: blue; background-color: blue; height: 200 width: 100%"/>
5. Text-based browsers display the line using dashes or underscores.
6. <br> or <lb>
7. <meta name="author" content="Diane Chou"/>
8. &#169