Properties of Matter
Metal rusting is an example
What is a chemical change?
The number of milliliters in 0.603 L
What is 603 mL?
The number of significant figures in 0.0045671002 g
What are 8 significant figures?
The closeness of a measurement or set of measurements to the correct or accepted value.
What is accuracy?
A testable statement that serves as a basis for making predictions and carrying out further experiments
What is a hypothesis?
Color, smell, and boiling point are all examples
What is a physical property?
The number of cm in 0.09225 km
What is 9225 cm?
The product of 0.8102 m and 3.44 m expressed in correct significant figures and units
What is 2.79 m2?
The closeness of a set of measurements to one another
What is precision?
1. The manipulated variable
2. The responding variable
1. What is independent variable?
2. What is dependent variable?
Density is one because it is independent from the quantity of matter present
What is intensive property?
The density in g/cm3 of a material given that 15.03 g occupies 13.24 mL
What is 1.135 g/cm3?
Round 399 893 201 m to 3 significant figures
What is 4.00 x 108 m?
The formula for % error
What is [experimental value - accepted value]/accepted value x 100%?
Express the answer in scientific notation with the correct number of significant figures:
0.002115 m x 0.0000405 m
What is 8.57 x 10-8 m2?
Boiling point vs. time to boil would be examples of these comparable properties whereas boiling point vs. combustibility would be examples of these comparable properties. Be sure to identify not only the types of properties but also which align with which.
What are boiling point and time to boil would represent intensive and extensive properties respectively? Whereas boiling point in relation to combustibility would be a physical vs. a chemical property respectively.
How many grams are in 22 ng?
What are 0.000 000 022 g? (2.2 x 10-8g)
Divide 1.089 kg by 3.22345 m3. Express the answer in correct units and significant figures. State what the above calculation is a measure of and convert the answer into units of g/mL.
What is 0.3378 kg/m3 and what is density?
0.0003378 g/mL or 3.378 x 10-4 g/mL
Student A measured values of 2.03 mL, 2.02 mL, and 1.99 mL; Student B measured values of 2.00 mL, 1.93 mL, and 2.08 mL. The accepted value was 2.01 mL. The student who was more precise was _________ and the student who was more accurate was _________.
What is A was more precise and more accurate?
Write the following in scientific notation
a. 0.000 000 673 0
b. 50 000.000 00
c. 0.000 003
What is
a. 6.730 x 10-7
b. 5.000 000 000 x 104
c. 3 x 10-6
Magnetism itself is an example of a(n) 1)_______________property whereas magnetic strength would be an example of a 2)__________________ property.
What are 1) intensive and 2) extensive?
0.654 ng of sucrose converted to µg, mg, cg and kg
What are 0.000654 µg, 0.000 000 654 mg or 6.54 x 10-7 mg, and 0.000 000 065 4 cg or 6.54 x 10-8 cg, and 6.54 x 10-13 kg.
The sum of 6.07812 g and 0.328 g.
The difference of 9.299 cm and 7.11 cm.
What is 6.406 g?
What is 2.19 cm?
A student recorded density measurements of 1.245, 1.278, and 1.310 g/mL. The accepted density is 1.250 g/mL. Calculate the percent error.
What is 2.2%?
Add 2.35 x 10-5g and 6.451 x 10-6g
What is 3.00 x 10-5 g?