SI Unit Measurements Activity for chemistry Name______Period______
Date______
We will be working with measurement of length, mass, and volume. The units of measurement that we are involved with is meter (m), and gram (g). Depending on the length of material, we may use millimeter (m) and also centimeter (cm) where cm3 = mL. (40 points)
Instruments to be used: electronic mass balance, rulers, and graduated cylinder.
Materials to be measured: paper clip, penny, marble, 80 ml Erlenmeyer flask, 100 ml beaker, baby food bottle.
Problem: How can be measure above mentioned materials?
Procedure for measuring length:
1. Use the meter stick to measure your height, there are four of you in the group; therefore each one of your height to be measured and converted to cm and mm.
2. Tabulate these measurements in the table and average the height of group members.
Group member / Height in meter (m) / Height in centimeter (cm) / Height in millimeter (mm)For height in m, round off to 1/10th m: for cm and mm, round off to whole number.
Average height in meter (m) / Average height in centimeter (cm) / Average height in millimeter (mm)3. Measure the mass of following materials in gram (g) and volume in milliliter (mL). For gram (g) and milliliter (mL) measurements, round off to 1/10th decimal point.
Material / Mass in gram (g) / Volume in milliliter (mL)paper clip
penny
marble
80 ml Erlenmeyer flask
100 ml beaker
4. Using the obtained measurements of mass in gram (g) and volume in milliliter (mL), calculate the density; density = mass/volume or D = m/v and for this data, the unit is in gram /milliliter or g/mL. Round off density value to 1/10th decimal point.
Material / Density (g/mL)paper clip
penny
marble
80 ml Erlenmeyer flask
100 ml beaker
5. How can you obtain the density of baby food bottle? (You must show all your work. The unit for the density is g/mL)
6. Based on the density value you obtained for baby food bottle, do you think this bottle will float or sink in water?
Explain your answer. (Hint: refer to Table 4, p.38)