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Honos Chem. 9 Test
Dr. Kloor
Question | Answer |
---|---|
Is used to write very large number or very small numbers | Scientific Notation |
Is a measure of the reproducibility of measurement | Precision |
Is a technique for converting between units | Dimensional Analysis |
Is used to make units smaller or larger | Metric Prefixes |
Anything that has mass or volume | Matter |
Is the capacity to do work | Energy |
Theoretically lowest temperature that can be reached | Absolute Zero |
Substances that cannot be changed into simpler substances by a chemical change | Element |
Substances that contain two or more elements in a fixed proportion | Compound |
A blend of two or more pure substances | Mixture |
A method to separate heterogenous mixtures | Filtration |
A method to separate homogenous mixtures | Distillation |
T/F: Temperature is a measure of how hot or cold something is | True |
T/F: The four states of matter are solid, liquid gas and air. | False |
T/F: For numbers less than one the exponent is positive | False |
T/F: One calorie is the amount of heat that raises the temperature of one gram of water by one degree centigrade | True |
T/F: Liquids as matter have definite volume and definite shape | False |
T/F: The SI temperature scale is called the Kelvin scale | True |
In the measurement 43.52 centimeters which digit is the most uncertain? | 2 |
The number of significant figures in the measurement 6.80 is? | 3 |
The number 210,000 has how many significant figures? | 2 |
A lump of coal | Potential Energy |
Crushing a can | Physical change |
Lighting a match | Chemical Change |
A waterfall | Kinetic Energy |
If D=m/v what is the density of an unkown element that has a mass of 10 g. and a volume of 50cm3 | 0.2g/cm3 |
If 1 calorie = 4.184 joules then 10 calories = how many joules | 41.84 |
Write the correct scientific notation for the number 503,000,000 | 5.03×10- 8 |
A baby has a fever his temperature is 40 degrees centigrade/celsius. What is his temperature in the Kelvin Scale | 313K |
After making an observations and proposing an hypothesis, a scientist's next step is: | Perform an experiment |
The metric measure best suited to measure distance between jackson, MS. And Memphis Tn. Would be | Kilometer |
How many significant digits are in the measurement 5.0070 g? | Five |
T/F: It is not necessary to clean up your work area in a lab | False |
T/F: All lab measurements are certain | False |
T/F: The density of a substance is measured in g/cm3 | True |
T/F: The metric system uses measures of ten to express large or small numbers and is used by the scientific community | True |
1 Kilometer | 1,000 meters |
1 centimeter | 1,000,000 millimeters |
1 mega gram | 0.000,001 |