For example, a two unit drop in ph is a 102 or 100 times increase in acidity. Use the diagram of the ph scale to answer the questions. Fill in the missing information in the table below. Lemon juice ph 2 pure water ph 7 oven cleaner ph hydrochloric acid ph 1 sodium hydroxide ph 14 ph 6 ph 4 toothpaste ph 9 washing soda ph 12 orange juice ph 5 vinegar ph 3 smelling salts ph 11. The worksheet gives a visual diagram of the ph scale and 15 questions based on the scale.
Emphasize that the ph scale is a measurement of the concentration of hydrogen ions in solution. If a solution happens to fall right in the middle, with a ph number of seven, it is neutral. Being able to identify the beginning sounds helps students read and write larger words. Swbat classify substances as acids or bases using the ph scale, ph indicator, and litmus paper.
Click on the tags below to find other worksheets in the same category. File comes in the form of a word document and a pdf document, also. The ph scale runs from 0 to 14, with 0 representing the highest concentration of hydrogen ions. Students are required to answer literal questions, make comparisons and draw inferences. Compounds are acidic if they have a ph lower than 7. Background info to assure you know why is ph important to biology. The first activity introduces students to the ph scale and then has students draw qualitative conclusions between the ph. The first activity introduces students to the ph scale and then has students draw qualitative conclusions between the ph value and hydronium and hydroxide ion concentrations. The ph value of a solution can be found using universal indicator. Worksheet 42 worksheet 4 ph and poh calculations fill in the from ph worksheet, source. It is great to use as a follow up to a class discussion, classwork or to assign for homework.
The ph scale is used to classify substances as acids and bases. An acid has a low ph ph 07 and a high hydrogen ion concentration. And as the scale changes one number the magnitude changes by 10. A solutions acidity, or its hydrogen ion concentration, is measured on the ph scale. Students colour in the scale to match the colours of universal indicator paper, then cut out the labels adding them to your scale in the correct place.
Distance learning acids, bases, and the ph scale worksheet tpt. For updates about sales and new products, please follow my store. Compounds with a ph higher than 7 are said to be basic or alkaline. Scale the line from 0 to 14 with a mark for each number. On the ph scale, where can you find the strong acids and the strong bases.
It is common that the ph scale is argued to range from 014 or perhaps 114, but neither is correct. Using the f or ph worksheet, students write the letters f or ph to show what digraph sound the picture shown begins with. Feb 23, 2015 the scale ranges from 0 to 14 and solutions with a ph number less than seven are considered acidic acids. Worksheet allowing pupils to make their own ph scale in colour. A map of the eastern us, showing the ph of rainfall in various states, indicates that the ph of rain in ny state is 4. Calculating ph and poh worksheet everett community college. On the ph scale below, label the ph ranges for a strong acid, weak acid, strong base, weak base and a neutral solution. By printig out this quiz and taking it with pen and paper creates for a good variation to only playing it online.
Some of the worksheets for this concept are the ph scale name chem work 19 3, acidsbases ph work, lesson 8 acids bases and the ph scale time ii, brainpop ph scale, calculating ph and poh work, ph practice work, acid and base ph calculations supplemental work key, work ph calculations name. Even a small change in ph can disrupt many biological processes. When the ph is less than 7, the solution is acidic, when the ph 7 it is neutral, and when it is greater than 7, it is basic. Calculate the values of both ph and poh of the following solutions. When the contaminated water from the mine release passed a sampling location, the ph lowered indicating more acid to approximately 4. The ph scale allows solutions to be ranked according to their acidity or alkalinity.
Scribd is the worlds largest social reading and publishing site. Calculating ph and poh worksheet w 335 everett community college tutoring center student support services program 1 what is the ph of a 0. On the ph scale, one unit of change represents a 10fold change in the degree of acidity or basicity. Things with a lower ph, like grapefruit juice and vinegar, are acidic, while things with a higher ph, like bleach and. The ph scale is a number scale that indicates how acidic or basic a solution is. The addition of the p reflects the negative of the logarithm, \\log\.
See more ideas about chemistry, teaching chemistry and science chemistry. This worksheet gives them practice using common words that they will encounter in their reading. The scale ranges from 0 to 14 and solutions with a ph number less than seven are considered acidic acids. Here you will find all we have for ph scale worksheet. Determine whether the brief statements below describe an acid, a base, or a neutral solution. Elementary ph scale displaying top 8 worksheets found for this concept some of the worksheets for this concept are lesson 8 acids bases and the ph scale time ii, acidsbases ph work, brainpop ph scale, ph practice work, work ph calculations.
Jan 14, 2008 cut and stick ph scale worksheet for students in key stage 3. This worksheet contains basic conceptual questions about acids, bases, and the ph scale. Things that are acids have a ph number that is less than. Use this chemistry resource as a class handout or as a transparency to enhance your lessons and increase student learning. Brainpop ph scale pdf worksheet i created for the ph scale movie on brain pop. Description this is a series of guided inquiry activities that were developed around the ph scale html 5 simulation. To understand what the pk w is, it is important to understand first what the p means in poh and ph.
Pure water has a ph of 7 and is considered neutral. Nov 11, 2012 a lesson plan and accompanying powerpoint for teaching ph scale plus questions for a peer assessment activity at the end. The ph scale measures how acidic or basic something is on a scale of 0 to 14. This worksheet is in pdf format and holds a printable version of the quiz ph scale. Worksheets are the ph scale name chem work 19 3, acidsbases ph work, brainpop ph scale, lesson 8 acids bases and the ph scale time ii, calculating ph and poh work, ph practice work, acid and base ph calculations supplemental work key, work ph calculations name. A base has a high ph ph 714 and a low hydrogen ion concentration. A lesson plan and accompanying powerpoint for teaching ph scale plus questions for a peer assessment activity at the end. Most cells can only survive within a certain range of ph. The ph scale is a measure of how acidic or alkaline a solution is. Acidic substances have a ph below 7, while alkaline substances bases have a ph above 7. Those with a ph number greater than seven are basic basesalkaline. Acids and bases worksheet middle school dsoftschools.
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