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Questions and Answers
What is the equivalent of 1 kilometer in meters?
What is the equivalent of 1 kilometer in meters?
How many grams are in 2 kilograms?
How many grams are in 2 kilograms?
What is the volume in milliliters of 2 liters?
What is the volume in milliliters of 2 liters?
If a length is 300 cm, what is it in meters?
If a length is 300 cm, what is it in meters?
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How many centimeters are in 2 meters?
How many centimeters are in 2 meters?
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What is the equivalent of 1 liter in milliliters?
What is the equivalent of 1 liter in milliliters?
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What is the purpose of the 'Hypothesize' step in the Scientific Method?
What is the purpose of the 'Hypothesize' step in the Scientific Method?
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What is the format of a number in Scientific Notation?
What is the format of a number in Scientific Notation?
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What is the purpose of the 'Analyze the Data' step in the Scientific Method?
What is the purpose of the 'Analyze the Data' step in the Scientific Method?
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How many millimeters are in 1 meter?
How many millimeters are in 1 meter?
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What is the purpose of the 'Draw a Conclusion' step in the Scientific Method?
What is the purpose of the 'Draw a Conclusion' step in the Scientific Method?
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What is the role of the independent variable in an experiment?
What is the role of the independent variable in an experiment?
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What is the smallest unit of matter that retains the properties of an element?
What is the smallest unit of matter that retains the properties of an element?
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What is the term for a group of atoms that are chemically bonded together?
What is the term for a group of atoms that are chemically bonded together?
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What is the dependent variable in an experiment?
What is the dependent variable in an experiment?
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What is the term for a substance that consists of two or more different elements?
What is the term for a substance that consists of two or more different elements?
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Study Notes
Metric Conversions
Introduction
- Physical science relies heavily on the use of the metric system for measuring physical quantities
- Understanding metric conversions is essential for accurate calculations and comparisons
Conversion Factors
-
Length
- 1 meter (m) = 100 centimeters (cm)
- 1 kilometer (km) = 1000 meters (m)
-
Mass
- 1 kilogram (kg) = 1000 grams (g)
-
Volume
- 1 liter (L) = 1000 milliliters (mL)
-
Temperature
- Celsius (°C) to Fahrenheit (°F): °F = (°C × 9/5) + 32
- Kelvin (K) to Celsius (°C): K = °C + 273.15
Conversion Steps
- Identify the given unit and the desired unit
- Determine the conversion factor (ratio of given unit to desired unit)
- Multiply the given value by the conversion factor
- Simplify the result to obtain the converted value
Examples
- Convert 250 cm to meters: 250 cm × (1 m / 100 cm) = 2.5 m
- Convert 500 g to kilograms: 500 g × (1 kg / 1000 g) = 0.5 kg
- Convert 25°C to Fahrenheit: (25°C × 9/5) + 32 = 77°F
Metric Conversions
Importance of Metric Conversions
- Physical science relies heavily on the metric system for measuring physical quantities
- Understanding metric conversions is essential for accurate calculations and comparisons
Conversion Factors
Length
- 1 meter (m) = 100 centimeters (cm)
- 1 kilometer (km) = 1000 meters (m)
Mass
- 1 kilogram (kg) = 1000 grams (g)
Volume
- 1 liter (L) = 1000 milliliters (mL)
Temperature
- Celsius (°C) to Fahrenheit (°F): °F = (°C × 9/5) + 32
- Kelvin (K) to Celsius (°C): K = °C + 273.15
Conversion Steps
- Identify the given unit and the desired unit
- Determine the conversion factor (ratio of given unit to desired unit)
- Multiply the given value by the conversion factor
- Simplify the result to obtain the converted value
Conversion Examples
- 250 cm to meters: 250 cm × (1 m / 100 cm) = 2.5 m
- 500 g to kilograms: 500 g × (1 kg / 1000 g) = 0.5 kg
- 25°C to Fahrenheit: (25°C × 9/5) + 32 = 77°F
Metric Conversions
- 1 meter (m) is equal to 100 centimeters (cm) and 1000 millimeters (mm)
- 1 kilometer (km) is equal to 1000 meters (m)
- 1 liter (L) is equal to 1000 milliliters (mL)
- 1 cubic meter (m³) is equal to 1000 liters (L)
- 1 gram (g) is equal to 1000 milligrams (mg)
- 1 kilogram (kg) is equal to 1000 grams (g)
- 1 second (s) is equal to 1000 milliseconds (ms)
- 1 minute (min) is equal to 60 seconds (s)
- 1 hour (h) is equal to 60 minutes (min)
Scientific Notation and Standard Notation
- Scientific notation is a shorthand way to represent very large or very small numbers
- Scientific notation format: a × 10^n, where 1 ≤ a < 10 and n is an integer
- Examples of scientific notation: 3.2 × 10^5, 4.5 × 10^-3
- Standard notation is the usual way of writing numbers
- Examples of standard notation: 320,000, 0.0045
Scientific Method
- Identify a problem or question
- Formulate a specific question to investigate
- Gather information and background knowledge
- Propose a possible explanation or solution
- Plan and outline the steps to test the hypothesis
- Carry out the experiment as planned
- Examine the results and draw conclusions
- Summarize the findings and determine if the hypothesis was supported
- Share the results with others
Independent and Dependent Variables
- Independent variable: the variable that is intentionally changed or manipulated by the experimenter
- Dependent variable: the variable that is being measured or observed in response to the independent variable
- Example: How does the amount of sunlight (independent variable) affect the growth of a plant (dependent variable)?
Chemistry
- Atoms: the smallest units of matter that retain the properties of an element
- Atoms consist of protons, neutrons, and electrons
- Molecules: groups of atoms that are chemically bonded together
- Elements: substances that consist of only one type of atom
- Compounds: substances that consist of two or more different elements
- Chemical reactions: processes that involve the transformation of one or more substances into new substances
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Description
Test your understanding of metric conversions, essential for accurate calculations and comparisons in physical science. Learn conversion factors for length, mass, volume, and temperature.
