Podcast
Questions and Answers
Which of the following best describes the scientific method?
Which of the following best describes the scientific method?
- Assumptions based on personal beliefs.
- A series of steps that starts with a conclusion.
- A set of unchangeable laws.
- An observation followed by a controlled experiment. (correct)
A theory can be absolutely proven correct in science.
A theory can be absolutely proven correct in science.
False (B)
What is the difference between mass and weight?
What is the difference between mass and weight?
Mass is the quantity of matter in a material, while weight is the force with which an object is attracted by gravity.
In chemistry, the study of the composition, structure, and changes in materials is known as __________.
In chemistry, the study of the composition, structure, and changes in materials is known as __________.
Match the following scientific terms with their definitions:
Match the following scientific terms with their definitions:
Which of the following statements is true about laws in science?
Which of the following statements is true about laws in science?
A hypothesis is a definitive conclusion based on experimental results.
A hypothesis is a definitive conclusion based on experimental results.
What is meant by the term 'matter'?
What is meant by the term 'matter'?
How many significant figures are there in the measurement 0.0320 m³?
How many significant figures are there in the measurement 0.0320 m³?
Trailing zeros in a whole number without a decimal point are always significant.
Trailing zeros in a whole number without a decimal point are always significant.
How many significant figures does the number 413.97 have?
How many significant figures does the number 413.97 have?
The measurement 156.00 g has _____ significant figures.
The measurement 156.00 g has _____ significant figures.
Match the following numbers with their number of significant figures:
Match the following numbers with their number of significant figures:
Which of the following measurements has the most significant figures?
Which of the following measurements has the most significant figures?
The number 2500 can be expressed with 2 significant figures as 2.5 x 10².
The number 2500 can be expressed with 2 significant figures as 2.5 x 10².
Write the number 2500 with 3 significant figures.
Write the number 2500 with 3 significant figures.
What happens to coffee when sugar is added and dissolves?
What happens to coffee when sugar is added and dissolves?
Precision refers to how close a measurement is to the true value of a measured quantity.
Precision refers to how close a measurement is to the true value of a measured quantity.
What are the two key aspects of a measurement?
What are the two key aspects of a measurement?
In the measurement 9.12, the first two digits (9.1) are certain, while the last digit (___) is estimated.
In the measurement 9.12, the first two digits (9.1) are certain, while the last digit (___) is estimated.
Match the following terms with their definitions:
Match the following terms with their definitions:
How can measurement errors be minimized?
How can measurement errors be minimized?
All measurements are exact and have no uncertainties.
All measurements are exact and have no uncertainties.
What is the true mass of Student C's most precise and accurate measurement?
What is the true mass of Student C's most precise and accurate measurement?
How many significant figures are in 19.0000?
How many significant figures are in 19.0000?
How many significant figures are in 0.0005650850?
How many significant figures are in 0.0005650850?
Rounding can influence the number of significant figures in a result.
Rounding can influence the number of significant figures in a result.
What is the result of 1.2151 rounded to three significant figures?
What is the result of 1.2151 rounded to three significant figures?
For the sum of 89.332 and 1.1, the final answer rounded to the correct number of significant figures is ______.
For the sum of 89.332 and 1.1, the final answer rounded to the correct number of significant figures is ______.
When multiplying or dividing numbers, the result should have the same amount of significant figures as which of the following?
When multiplying or dividing numbers, the result should have the same amount of significant figures as which of the following?
Match the operation with its significant figures rule:
Match the operation with its significant figures rule:
What is the average of the lengths 6.64, 6.68, and 6.70?
What is the average of the lengths 6.64, 6.68, and 6.70?
What is the result of 11,254.1 g + 0.1983 g expressed to the correct number of significant figures?
What is the result of 11,254.1 g + 0.1983 g expressed to the correct number of significant figures?
The result of 66.59 L − 3.113 L rounded to the correct number of significant figures is 63.48 L.
The result of 66.59 L − 3.113 L rounded to the correct number of significant figures is 63.48 L.
What is the correct rounding of 0.00087564 to three significant figures?
What is the correct rounding of 0.00087564 to three significant figures?
The result of 15.985 g ÷ 24.12 mL to the correct number of significant figures is __________.
The result of 15.985 g ÷ 24.12 mL to the correct number of significant figures is __________.
Match the following calculations to their results after rounding to the correct number of significant figures:
Match the following calculations to their results after rounding to the correct number of significant figures:
Which of the following represents the expression 0.00564458 rounded to four significant figures in scientific notation?
Which of the following represents the expression 0.00564458 rounded to four significant figures in scientific notation?
The result of evaluating 412.272 + 0.00031 – 1.00797 + 0.000024 + 12.8 should be rounded to 424.064364.
The result of evaluating 412.272 + 0.00031 – 1.00797 + 0.000024 + 12.8 should be rounded to 424.064364.
What is the calculated value of (71.359 m − 71.357 m) expressed to the correct number of significant figures?
What is the calculated value of (71.359 m − 71.357 m) expressed to the correct number of significant figures?
