Measurement
What is the factor you change in an experiment?
Independent Variable
How many sig figs are in 5900?
2
How many grams are in 56 kg?
56000 g
What do we call a property that depends on the amount of matter present?
Extensive
Do this calculation with the correct number of sig figs: 6.71 - 3.1 = ?
3.6
The degree to which the experimental result agrees with the accepted value
Accuracy
What is a conversion factor?
ratio of equivalent values that equals 1
How many L are in 5600 kL?
5600000
Burning wood is this type of change.
chemical
Convert 768900 to scientific notation.
7.689 x 10^5
What is the average of 7.1 g, 7.8 g, and 8.9 g?
7.9
How many sig figs are in 0.202000
6
How many cups are in 4.3 liters?
18 cups
What is the law of conservation of matter?
matter is never created or destroyed, it only changes forms
Convert 5.6 x 10^-5 to standard notation.
.000056
What system do scientists use for measurement and what are the five base units?
SI System, kilogram, meter, seconds, mole, Kelvin
What is 72 degrees C in Fahrenheit?
161.6 degrees F
How many seconds are in 5.0 years?
1.6 x 10^8 s
Name three signs of a chemical reaction.
Release of light
Sudden temperature change
Sudden color change
Odor change
Gas given off
Sudden appearance of a solid
This solid that forms is known as a precipitate
Do this calculation with the correct number of sig figs: 6.0 x 7.898 =
47
A student estimated the mass of a substance to be 273 grams. The actual mass of the substance is 240 grams. Calculate the percentage error.
13.75%
You were in the lab and measured the mass of a rock to be 50 g. You then wanted to get the volume of your rock via water displacement. The initial volume you recorded was 23 mL. After placing the rock in the cylinder the final volume reads 26 mL. What is the density of the rock?
20 g/mL
How many cm are in 41 feet?
1200 cm
Classify as Element (E), Compound (C), Homogeneous mixture (HO), or Heterogeneous mixture (HE): Kool-Aid, Copper wire
HO, E
A car is traveling 65 miles per hour. How many meters per second is this speed?
29 m/s