Week 2 Chemistry Quiz

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| By Alissa Hoeft

Alissa Hoeft

Community Contributor

Quizzes Created: 2 | Total Attempts: 413

| Attempts: 70

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1/13 Questions

The atomic number tells you how many _____________________ are in an element

About This Quiz

The 'Week 2 Chemistry Quiz' assesses knowledge of basic chemistry concepts, including the definition of matter, lab safety rules, and atomic structure. It evaluates understanding of proton charges and the atomic composition of elements like Cobalt and Silver.

2.

What is the charge of a proton?
- Negative
- Neutral
- Positive
- None of the above
Correct Answer

A. Positive

Explanation

A proton is a subatomic particle that carries a positive charge. It is one of the fundamental particles that make up an atom, along with neutrons and electrons. Protons are located in the nucleus of an atom and are essential for determining the atomic number and identity of an element. They have a charge of +1, which is equal in magnitude but opposite in sign to the charge of an electron. Therefore, the correct answer is positive.

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3.

What is the charge of an electron?
- Negative
- Neutral
- Positive
- None of the above
Correct Answer

A. Negative

Explanation

An electron is a subatomic particle that carries a negative charge. It is one of the fundamental particles that make up atoms. Electrons are found outside the nucleus of an atom and are involved in various chemical reactions and electrical currents. The negative charge of an electron is equal in magnitude to the positive charge of a proton, which is the other subatomic particle found in the nucleus of an atom. Therefore, the correct answer is negative.

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4.

What is the charge of a neutron?
- Negative
- Neutral
- Positive
- None of the above
Correct Answer

A. Neutral

Explanation

A neutron is a subatomic particle that is found in the nucleus of an atom. It does not have any electrical charge, meaning it is neutral. Unlike protons, which have a positive charge, and electrons, which have a negative charge, neutrons have no charge at all. This neutrality allows neutrons to interact with both positively charged protons and negatively charged electrons, contributing to the stability of an atom.

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5.

Which value, 12.0cm or 12.00 cm would be closer to the actual length of the object?
- 12.0
- 12.00
- Option 3
- Option 4
Correct Answer

A. 12.0

Explanation

The value 12.0cm would be closer to the actual length of the object. The additional decimal place in 12.00cm does not provide any significant increase in accuracy since the object's length is given to the nearest tenth of a centimeter. Therefore, the extra zero after the decimal point in 12.00cm is irrelevant in this context.

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6.

Define 'matter' in your own words
7.

For the following scenario, write the safety or classroom rule violation(s) that occured: Diana and Mike were going to be late to their next class. After rushing to put away a few materials, they left the rest of the materials on the lab table.
8.

For the following scenario, write the safety or classroom rule violation(s) that occurred: The teacher was not in the room yet. Jake began weighing chemicals, touching them with his hands. His nose itched so he rubbed it.
9.

How many protons are in Cobalt?
10.

How many neutrons are in silver?
11.

How many electrons are in iron?
12.

You need to keep the temperature of a hot water bath at 21.6oC. Would it be better to use a thermometer with a line for every 0.5oC or every 0.1oC? Please explain your answer in complete sentences.
13.

You use a ruler to measure an object that is 23.4 cm. A. What is the highest value the actual length could be? B. A. What is the lowest value the actual length could be?

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Aug 29, 2014

Quiz Created by
Alissa Hoeft

Week 2 Chemistry Quiz

The atomic number tells you how many _____________________ are in an element

Quiz Preview

What is the charge of a proton?

What is the charge of an electron?

What is the charge of a neutron?

Which value, 12.0cm or 12.00 cm would be closer to the actual length of the object?

Define 'matter' in your own words

For the following scenario, write the safety or classroom rule violation(s) that occured: Diana and Mike were going to be late to their next class. After rushing to put away a few materials, they left the rest of the materials on the lab table.

For the following scenario, write the safety or classroom rule violation(s) that occurred: The teacher was not in the room yet. Jake began weighing chemicals, touching them with his hands. His nose itched so he rubbed it.

How many protons are in Cobalt?

How many neutrons are in silver?

How many electrons are in iron?

You need to keep the temperature of a hot water bath at 21.6oC. Would it be better to use a thermometer with a line for every 0.5oC or every 0.1oC? Please explain your answer in complete sentences.

You use a ruler to measure an object that is 23.4 cm. A. What is the highest value the actual length could be? B. A. What is the lowest value the actual length could be?