1. Water’s Characteristics
Day 7

2. NB setup date Water WU: EQ: 4Qs Notes Summary 41 Penny Lab
Question: How many drops of tap water and soapy water can a penny hold?
Predict # : Tap water ____Soapy water ____
Hypothesis (If…then…)
Experiment: …
Data: Graph:
Analyze: (2+ sentences)
Conclusion: (3+ sentences) 40
date
Water
WU:
EQ:
4Qs Notes
Summary
Trial 1
Trial 2
Trial 3
Aver.
Tap
Soapy

3. Warm-up: Page 41
What molecule is this? Why is it important for life?

4. Water EQ: Describe the important characteristics of water.
NBpg. 41
Water
1 of 2
Page 8
EQ: Describe the important characteristics of water.
Within the molecule the atoms are shared in Covalent Bonds.
H2O is neutral
Hydrogen Bonds are the attraction of the H and O between several water molecules.
The Oxygen is slightly negative,
The Hydrogen is slightly positive.
(Q1)
(Q2)
sketch

5. NBpg. 41
Water
2 of 2
Page 8
Adhesion is the attraction between molecules of different substances EX: water moving on plants
Cohesion is an attraction between molecules of the same substance EX: rain drops
Surface Tension is the cohesion at the surface of water, which forms a surface "film/skin.”
Some substances may reduce the cohesive force, which will reduce the strength of the surface.
(Q3)
(Q4)
Summary

6. NBpg 40: PENNY LAB
Include these words in your explanations: adhesion, cohesion, surface tension, volume, surface area
Question: How many drops of water can a penny hold with tap water and soapy water?
Predict # : Tap water ____ Soapy water ____
Hypothesis (If…then…)
Experiment:
Do 3 trials for tap and soapy water. Count how many droplets of water fit on a penny.
Data: Graph:
Create a graph based on the
data, and remember TAILS
Analyze: (2+ sentences)
Does tap or soapy water have more surface tension?
Conclusion:(+3 sentences)
Restate your Hypothesis, was it accepted or rejected.
Explain why, by summarizing the data.
Trial 1
Trial 2
Trial 3
Aver.
Tap
Soapy