DMIC for Week 4 !

ACIDS AND BASES

 TOPIC 8 -ACIDS AND BASES 

1. What is pH?

2. How do you measure pH?

3. What is the scale pH is measured on?

4. What pH level does water have? Is water acidic, basic, or neutral?

5. What is the most acidic pH level?

6. What is the most basic pH level?

1. In chemistry, pH is a scale used to specify the acidity or basicity of an aqueous solution

2. The pH value can be measured using electrochemical measuring systems, litmus paper, or indicators and colorimeters. 

3. pH is a measure of how acidic/basic water is. The range goes from 0 - 14, with 7 being neutral. 

4. The most alkaline substances, such as lye, have a pH of 14.

5. The scale has values ranging from zero (the most acidic) to 14 (the most basic). 

14 - (answer) 

Atom- simplest form of matter p- H = e - n = n - no  7=7e 7pt 7e= le

+1 (GE) ions charges atoms 

Acids -  have hydrogen ions

           H+

Bases- have hydroxide ion S0H- 

Equipments you need:

Well Plate 

pH strips/;litmus paper 

pH chart/table (1 to 14)

Dropper

Products:

Baking soda 

Distilled water

Window cleaner

Toilet bowl cleaner

Lemon Juice 

Milk

Orange juice 

Apple juice 

Vinegar

Detergent

Tea/Coffee 

Substance	Acid/Base (Prediction	Colour changes from? (Litmus paper)	Result (Acid/Base)
Orange Juice	Purple	Red
Apple Juice	Pink
Vinegar	Blue
Milk	Red	Purple
Tea/Coffee	Blue
Destergent	Green
Lemon Juice	Blue
Water	Red
Toilet Cleaner	Purple
Baking Soda	Brown
Window Cleaner	Brown

ACIDS

Blue - Red

Red - Red   ( no effect)

In tech we learned about Acids and Bases. It was very hard.

Journey to Tokyo

Today we learned about the olympic ELLA WILLIAMS

Pulse Rates

 

1	Pulse Rates
2	Investigate the effect of different types of physical activity on heart rate / Pulse Rate. Which actions/activity resulted in the highest heart rate? Lowest heart rate? Why do you think this might be? Hypothesis > I think ..
3	High blood pressure - 120mmHg Low blood pressure 80 mmHg
4	Finding out my Pulse Rate
5	My investigation steps Materials / resources / people: 2 people ONLY! STEP 1 Gather a Heart Rate watch and a Timer watch STEP 2 Then, put your watch on the pulse rate mode and start doing your tasks STEP 3 After every task you will get a certain number and you will write that number under the “Heart Rate mmHg”  STEP 4 Then you can find out your heart rate! STEP X

In tech we learned about our Pulse Rates.

Cybersmart Challenge #16

For Cyber Smart we did things we like.

Find X

Today we did Algebra. And we found what the x meant!

Friday Term 3

Dame Valerie Adams - (Journey, Olympics)

2.5 He aha te tae? (Makawe)

Wilson Week 2 cars

Today we read about cars