Metric System
The prefix h in metric system units stands for
Hecto
All numbers ________ are significant.
1-9
What is the basic scientific notation form?
_._ x 10-
What is the closeness of a result to the true value?
Accuracy
Plastic eye protection that must be worn in the lab at all times?
Goggles
When going from small units to big units (moving to the left), what mathematical process do you do?
Divide
how many significant figures are in 738,140
5
What is 1,580,000 in scientific notation?
1.58x106
4 students performed an experiment to measure the density of aluminum (2.7g/mL). Who has the MOST accurate data?
John( 2.923, 2.924, 2.925) Sally( 2.316, 2.527, 2.941) Megan( 2.649, 2.731, 2.695) Mike (2.701, 2.699, 2.702)
Mike has the most accurate data
The device with a flat surface used to heat the materials, glass containers holding liquids etc.
Hot plate
What is the appropriate metric system base unit for measuring liquids?
Liter
Zero's after both a number 1-9 and a decimal are?
Significant
What is 0.000903 in scientific notation
9.03x10-4
What is a measure of how close a series of measurements are to one another?
Precision
Scissor-like tongs used to pick up and hold small items. Most often used to hold a substance into the flame of the Bunsen burner.
Crucible tongs
Convert 21dkm to cm
21,000 cm
how many significant figures are in 1,806.500
7
What is 9.274 in scientific notation
9.274x100
4 students performed an experiment to measure the density of aluminum (2.7g/mL). Who has the MOST precise data?
John( 2.923, 2.924, 2.925) Sally( 2.316, 2.527, 2.941) Megan( 2.649, 2.731, 2.695) Mike (2.701, 2.699, 2.702)
Johns data is the most precise
A glass container, conical in shape, used for heating liquids or used in titrations. Common sizes are 100mL and 250mL.
Erlenmeyer flask
How do I convert metric system units?
By factors of 10
These zeros (0.000291) are an example of?
Leading zeros
What is 6.309x107 in standard form?
63,090,000
4 students performed an experiment to measure the density of aluminum (2.7g/mL). Who's data is accurate but not precise?
John( 2.923, 2.924, 2.925) Sally( 2.316, 2.527, 2.941) Megan( 2.649, 2.731, 2.695) Mike (2.701, 2.699, 2.702)
Megan's data is accurate but not precise
What piece of glassware should be used to precisely measure 40mL of a chemical solution?
50mL graduated cylinder