PH investigation Flashcards
1
Q
what are properties of acids
A
- sour
- have a ph value of 0-6
- red litmus = red
- blue litmus = red
- universal indicator turns orange
- Concentration of H+ are high
- OH- are low
- 2 ex - hydrochloric acid, artic acid
2
Q
what are properties of bases
A
- bitter
- have a ph value of 8-14
- red litmus = blue
- blue litmus = blue
- universal indicator turns blue - purple
- Concentration of H+ are low
- OH- are high
- 2 ex - sodium bicarbonate, sodium hydroxide
3
Q
what are properties of neutral
A
- have a ph value of 7
- red litmus = red
- blue litmus = blue
- universal indicator turns gree
- Concentration of H+ and OH- are equal
- 2 ex - seawater, water
4
Q
what is neutralization
A
Hydrogen ion (H+) come from acid and will combine with Hydroxide ions (OH-) from base to form water molecules
5
Q
what is reliability
A
- recorded results that are close together and data is repeatable
- how definite that conclusion is correct
- collect as many results as you can and the average
6
Q
what is accuracy
A
- ## recorded results that are close to the true value
7
Q
what are ways to increase accuracy
A
- read measurement at eye level
- record measurements over a wide range
- use sensitive equipment
- reduce random errors
8
Q
what is anomalous
A
- data points that do not match with other data points so it should be excluded from the data
