18 Questions
What is the temperature scale often used in chemistry?
Kelvin scale
Which temperature scale sets water's freezing point at 0 degrees?
Celsius scale
What is the zero point of the Kelvin scale called?
Absolute zero
How many scales of temperature are currently in use according to the text?
Three scales
Which scientist devised the Fahrenheit scale?
Gabriel Fahrenheit
What is the temperature at which all motion of particles ceases?
$-273^{ ext{o}}C$
What is the correct way to express 35,000 meters in scientific notation?
3.5 x 10^4 m
What is the number of significant figures in 0.0025 kg?
3
If the temperature is 77°F, what is its value in degrees Celsius?
25°C
What is the freezing point of water in Kelvin?
273 K
If the temperature is 50°C, what is its value in Kelvin?
323 K
Which prefix is used to represent 10^-12 in the SI system?
Pico (p)
What temperature does water boil at on the Fahrenheit scale?
212°F
In scientific notation, how would you write 0.0006 m?
6 x 10^-4 m
What is the freezing point of water in Kelvin?
+273.15 K
What is absolute zero in Celsius?
-273.15°C
How do you convert Fahrenheit to Celsius?
$C = (F - 32) \times \frac{5}{9}$
If a number is written in the form a x 10^b in scientific notation, what does 'a' represent?
Coefficient greater than or equal to 1 but less than 10
Study Notes
Temperature
- Temperature is a property of matter that determines the direction of heat transfer.
- It is frequently measured quantity in chemistry, and is the measure of how hot or cold one object is relative to another.
Temperature Scales
- There are three temperature scales in use: Fahrenheit, Celsius, and Kelvin.
- The Celsius scale is also known as the Centigrade scale.
- The Kelvin scale is the SI scale used to measure temperature, with its zero point being absolute zero (-273°C).
- Absolute zero is the temperature at which all motion of the particles of matter ceases.
Converting Between Temperature Scales
- Celsius to Kelvin: K = °C + 273
- Kelvin to Celsius: °C = K - 273
- Fahrenheit to Celsius: °C = 5/9(°F - 32)
- Celsius to Fahrenheit: °F = 9/5°C + 32
Measurement Systems
- The Metric System is a decimal system of measurement, with the SI system being a specific metric system.
- The SI system has seven base units: kilogram (kg), second (s), meter (m), ampere (A), candela (cd), and mole (mol).
- The International System of Units (SI) is adopted worldwide and is simple and convenient to use since all units are based on multiples of 10.
- The English System, also known as the British or Imperial system, uses units such as yard, ounce, and pound.
Scientific Notation
- Scientific notation is a standard way of writing very large and very small numbers.
- Examples: 0.0005 m = 5 x 10^-4 m, 1,200,000 s = 1.2 x 10^6 s.
- To write in scientific notation, follow the form: a x 10^b, where a is a number between 1 and 9, and b is the positive or negative exponent.
Test your knowledge on temperature scales, focusing on Fahrenheit, Celsius, and Kelvin scales. Understand the unique characteristics of each scale, including their zero points and degree sizes. Explore the corresponding temperatures for freezing and boiling points on each scale.
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