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 5.03 g occupies 3.24 mL
What is 1.55 g/cm3?
Round 398 743 201 m to 3 significant figures
What is 399 000 000 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?
What are 1) chemical and 2) physical?
How many grams are in 882 µg?
What are 0.000882 g? (8.82 x 10-4g)
Divide 94.20 g by 3.167 22 mL. Express the answer in correct units and significant figures. Also state what the above calculation is a measure of.
What is 29.74 g/mL and what is density?
Student A measured values of 2.04 mL, 2.03 mL, and 2.06 mL; Student B measured values of 1.99 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 B was more accurate?
Write the following in scientific notation
a. 0.000 673 0
b. 50 000.0
c. 0.000 003 010
What is
a. 6.730 x 10-4
b. 5.000 00 x 104
c. 3.010 x 10-6
1)_______________ is the amount of space something occupies whereas 2)______ is a measure of the amount of matter. Both quantities are dependent on the amount of matter present and thus 3)_______________ properties.
What are 1) volume, 2) mass, and 3) extensive?
0.947 mg of sucrose converted to µg, g, and kg
What are 947 µg, 0.000947 g or 9.47 x 10-4g, and 0.000000947 kg or 9.47 x 10-7 kg?
The sum of 6.078 g and 0.3329 g.
The difference of 8.2 cm and 7.11 cm.
What is 6.411 g?
What is 1.1 cm?
A student recorded density measurements of 1.25, 1.28, and 1.30 g/mL. The accepted density is 1.255 g/mL. Calculate the percent error.
What is 1.99 %?
Add 2.345 x 10-4g and 3.4521 x 10-6g
What is 2.380 x 10-4 g?