Introduction to Chemistry
Flashcard
•
Chemistry
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a Graduated Cylinder?
Back
A graduated cylinder is a piece of laboratory glassware used to measure the volume of a liquid accurately. It has markings (graduations) along its length to indicate volume.
2.
FLASHCARD QUESTION
Front
What are significant figures?
Back
Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in a decimal.
3.
FLASHCARD QUESTION
Front
What is an independent variable in an experiment?
Back
The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.
4.
FLASHCARD QUESTION
Front
How do you calculate molarity?
Back
Molarity (M) is calculated using the formula: M = moles of solute / liters of solution.
5.
FLASHCARD QUESTION
Front
What is the significance of non-zero numbers in significant figures?
Back
All non-zero numbers (1-9) are always considered significant in measurements.
6.
FLASHCARD QUESTION
Front
What is the dependent variable in an experiment?
Back
The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.
7.
FLASHCARD QUESTION
Front
What is the formula for calculating the volume of a cylinder?
Back
Volume = πr²h, where r is the radius and h is the height of the cylinder.
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