Science Measurement Quiz

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Questions and Answers

Which of the following is a correct metric unit for length?

yard

kilometer (correct)

gram

pound

Which of the following is not considered a fundamental unit in the SI system?

calorie (correct)

Kelvin

meter

ampere

What will happen when gasoline, with a density of 0.7025 g/mL, is added to water?

The mixture will improve engine performance.

It will sink to the bottom.

It will mix, making it indistinguishable.

It will float on top. (correct)

The boiling of water is classified as which type of change?

A physical change since gaseous water is chemically the same. Signup and view all the answers

Which statement correctly describes the state of matter that has both definite volume and definite shape?

Solid state Signup and view all the answers

An atom of bromine with a mass number of 79 contains which of the following?

35 protons, 44 neutrons, 35 electrons Signup and view all the answers

Which atomic symbol is incorrectly written?

14N8 Signup and view all the answers

What does the formula for water, H₂O, imply?

There are two hydrogen atoms and one oxygen atom per water molecule. Signup and view all the answers

Which of the following statements about ions is false?

Ions are formed by changing the number of protons in an atom's nucleus. Signup and view all the answers

Which metric relationship is incorrect?

1 gram = 10^3 kilograms Signup and view all the answers

What term describes the degree of reproducibility of measurements?

precision Signup and view all the answers

Which value represents 54 km in meters?

5.4 x 10^4 m Signup and view all the answers

When representing the number 0.045006700 with four significant figures, which form is correct?

0.04501 Signup and view all the answers

What state of matter has a definite volume but no definite shape?

liquid state Signup and view all the answers

In scientific notation, how is the number 0.000191 expressed?

1.91 x 10^-4 Signup and view all the answers

How is the number 165,000 expressed in exponential notation?

1.65 x 10^5 Signup and view all the answers

How should the number 0.0470 be expressed in scientific notation?

4.70 x 10^-2 Signup and view all the answers

When measuring the perimeter with length 33.16 cm and width 24.83 cm, how many significant figures should be reported?

3 Signup and view all the answers

What is the conversion of -46.9°C to Fahrenheit using the formula provided?

-52.4 °F Signup and view all the answers

What is the correct result of the calculation 4.0021 - 0.247 using significant figures?

3.76 Signup and view all the answers

How many significant figures are in the number 0.0006313?

4 Signup and view all the answers

Which of the following is true regarding the isotope rhenium with mass number 185?

75 protons, 110 neutrons Signup and view all the answers

For the SI prefix 'deci', what is its correct value?

0.1 Signup and view all the answers

Knowing the number of protons in a neutral atom allows you to determine what?

The number of electrons Signup and view all the answers

Is it true that the number of neutrons is the same for all neutral atoms of a particular element?

False Signup and view all the answers

How many protons, neutrons, and electrons does the $^{40}Ca^{2+}_{20}$ ion have?

22 protons, 20 neutrons, 18 electrons Signup and view all the answers

What would be the total mass of a 6.267-mol sample of sodium hydroxide (NaOH)?

250.7 g Signup and view all the answers

What is the primary characteristic of an ion?

It is formed by adding or subtracting electrons. Signup and view all the answers

Which of the following pairs of elements is incorrectly matched?

Palladium, Pd Signup and view all the answers

Study Notes

Multiple Choice Questions

Question 1: Which metric relationship is incorrect? The incorrect relationship is 1 gram = 10³ kilograms
Question 2: What is the distance of 54 km in meters? 54 km equals 54,000 meters
Question 3: What is the degree of agreement among multiple measurements called? The degree of agreement among multiple measurements is called precision
Question 4: What is the agreement of a particular value with the true value called? The agreement of a particular value with the true value is called accuracy
Question 5: A scientist obtains 0.045006700, how should it be written with 4 significant figures? 0.0450
Question 6: Express 0.000191 in scientific notation? 1.91 x 10^-4
Question 7: What state of matter has a definite volume but not a definite shape? Liquid state
Question 8: Express 165,000 in exponential notation? 1.65 x 10⁵
Question 9: Express 0.0470 in scientific notation? 4.70 x 10^-2
Question 10: Is the statement "Color changes always indicate a chemical change" true or false? False
Question 11: How many significant figures should you report for the perimeter of a textbook measuring 33.16 cm by 24.83 cm? 3 significant figures
Question 12: Convert -46.9°C to °F? -52.4°F
Question 13: What is a metric unit for length? Kilometer
Question 14: Which of the following is not an SI unit? Pound
Question 15: What happens when gasoline is added to water? It will float on top.
Question 16: Is the statement "All physical changes are accompanied by chemical changes" true or false? False
Question 17: What type of change is boiling water? Physical change
Question 18: What state of matter has both definite volume and shape? Solid state
Question 19: How many protons, neutrons, and electrons are in an atom of bromine-79? 35 protons, 44 neutrons, 35 electrons
Question 20: Which atomic symbol is incorrect? 8N
Question 21: The formula H₂O suggests what about mass of hydrogen compared to oxygen? There are two hydrogen atoms and one oxygen atom per water molecule
Question 22: What is wrong with the statement that ions are formed by adding electrons to a neutral atom? Ions are formed by removing electrons from a neutral atom.
Question 23: Calculate 4.0021 - 0.247 with significant figures? 3.76
Question 24: How many significant figures are there in 0.04560700? 7 significant figures
Question 25: How many significant figures are there in 0.0006313? 4 significant figures
Question 26: How many neutrons and protons are in the nucleus of a rhenium-185 (Re-185) atom? 75 protons, 110 neutrons
Question 27: Which SI prefix-meaning pair is incorrectly matched? deci = 10
Question 28: What can be determined by knowing the number of protons in a neutral atom? The number of electrons in the neutral atom
Question 29: Is the statement "The number of neutrons in an atom is the same for all neutral atoms of that element" true or false? False
Question 30: Write out the correct proton, neutron, and electron count for 40Ca²⁺? 20 protons, 20 neutrons, and 18 electrons.
Question 31: What species has 12 protons and 10 electrons? Mg²⁺
Question 32: What are the numbers of protons, neutrons, and electrons in ³⁹K⁺? 19 protons, 20 neutrons, 18 electrons
Question 33: What is the mass of 6.267 mol of sodium hydroxide (NaOH)? 250.7 g
Question 34: How is an ion formed? By adding or subtracting electrons from the atom.
Question 35: Which of the following are incorrectly paired? Phosphorus, Pr
Question 36: Which of the following are incorrectly paired? Copper, Cu
Question 37: Which of the following are incorrectly paired? Silicon, Si
Question 38: How many significant figures are in 3.1400? 5
Question 39: How many moles of HCl are in a 52.6 g sample? 1.44 mol
Question 40: Is the statement "The number of electrons in an atom is the same for all neutral atoms of that element" true or false? True

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Description

Test your knowledge on scientific measurements and conversions with this quiz. You'll cover topics such as significant figures, scientific notation, and the properties of different states of matter. Perfect for students looking to sharpen their understanding of measurement in science.