1. DO NOW
1) What do the three images below have in common?
2) What is different about the three images?
3) Which of the images contains water (H2O)?
1.
2.
3.
3. Today’s Objectives
Students will be able to....
- describe lab safety rules
- identify lab tools and explain what
variables are measured with each tool
- identify the 3 states of matter
8. Basic Safety Rules
#1 Rule: Use common sense.
Others:
No horseplay in LAB!
Follow written/oral directions.
9. Basic Safety Rules
#1 Rule: Use common sense.
Others:
No horseplay in LAB!
Follow written/oral directions.
Handle chemicals/glassware with respect.
10.
11. Measurements
Measurement provides QUANTITATIVE
information to QUALITATIVE observations.
Example:
“You are tall” = Qualitative
“You are 5 ft and 6 inches tall” = Quantitative
Measurements always have 2 parts
1) a Number/# 2) a Unit
12. Units Of Measurement You Must Know
Use SI units — based on the metric system
Length
Mass
Volume
Time
Temperature
13. Units Of Measurement You Must Know
Use SI units — based on the metric system
Length meter, m
Mass
Volume
Time
Temperature
14. Units Of Measurement You Must Know
Use SI units — based on the metric system
Length meter, m
Mass kilogram, kg
Volume
Time
Temperature
15. Units Of Measurement You Must Know
Use SI units — based on the metric system
Length meter, m
Mass kilogram, kg
Volume liter, L
Time
Temperature
16. Units Of Measurement You Must Know
Use SI units — based on the metric system
Length meter, m
Mass kilogram, kg
Volume liter, L
Time
seconds, s
Temperature
17. Units Of Measurement You Must Know
Use SI units — based on the metric system
Length meter, m
Mass kilogram, kg
Volume liter, L
Time
seconds, s
Temperature kelvin, K
18. Measuring in the
Chemistry Lab
Volume
Length
Temperature
Mass
19. Graduated Cylinder and Beakers
Graduated cylinders and beakers are used to
measure the Volume of liquids. Example Units
of Volume are Liters (L), Milliliters (mL) and
cubic centimeters (cm3)
20. Meter Stick or Ruler
A meter stick or ruler is used to measure Length.
Example Units of Length are Meters (m),
Centimeters (cm), and Feet (ft)
21. Thermometer
A thermometer is used to measure the
Temperature of substances. Example Units
of Temperature are Celsius (oC),
o
Farenheight ( F) and Kelvin (K)
22. Electronic Balance
An electronic balance is used to measure Mass.
Example Units for Mass are grams (g), kilograms
(kg) and ounces (oz)
23. Chemistry is the study of matter
and the transformations matter
can undergo…
24. Chemistry is the study of matter
and the transformations matter
can undergo…
Image courtesy: www.uwf.edu/chemistry/ \n\nIntroduction to Chemistry\n \n1.       What is chemistry?\n2.       What are the four parts of the scientific method?\n3.       What is a control experiment?\n4.       Describe the three types of variables.\n5.       Compare laws, theories, and hypotheses.\n6.       What is the only way to prove a hypothesis true?\n7.       Why do laws and theories evolve?\n8.       What is the last step of solving any problem?\n9.       What is measurement?\n10.     What is a dimension?\n11.     What is a unit?\n12.     What is the difference between fundamental and derived units?\n13.     Why is the standard for mass, in the SI, unique?\n14.     What is the difference between mass and moles?\n15.     Is density a fundamental or derived unit?\n16.     How is a conversion factor made?\n17.     How is one unit converted to another?\n18.     What is precision?\n19.     What do the significant figures of a measurement indicate?\n20.     In what situation are trailing zeros always significant.\n21.     Numbers in scientific notation have the basic form A x10B. What is the range of A?\n22.     What kind of number will have a negative B?\n23.     Why do scientists use graphs?\n24.     What variables go on which of the axes of a graph?\n25.     How do direct and inverse relationships differ?\n26.     Describe the graph of a direct linear relationship.\n27.     Describe the graph of an inverse parabolic relationship.\n28.     What is the slope of a horizontal line?\n29.     In an experiment the independent variable does not change. What is the slope of the graph?\n30.     During a lab experiment the temperature of the gas in a balloon is varied and the volume is measured. \n Which of the two variables will be graphed on the horizontal axis and which will be graphed on the vertical axis?\n31.     What kind of relationship exists between P and z in this equation? P = mv/z2\n