# Laboratory 4: Report Sheet - Lab 4## B.2| Element | Metal/Nonmetal | Prediction: Shiny or Dull | Correct? Yes/No ||------------|-----------------|---------------------------|-----------------| | Chromium | | | || Gold | | | || Lead | | | || Cadmium | | | || Silicon | | | |## C. Subatomic Particles| Element | Atomic Number | Mass Number | Protons | Neutrons | Electrons ||-----------|----------------|--------------|---------|-----------|-----------|| Iron | 27 | 19 | 30 | 13 | || Bromine | 80 | | | | || Gold | 197 | | 53 | 74 | |## D. Isotopes| Nuclear Symbol | Protons | Neutrons | Electrons ||----------------|---------|----------|-----------|| ⁴⁰₂₀Ca | 20 | 22 | || ⁴³₂₀Ca | 20 | 24 | 20 || ⁴⁶₂₀Ca | | 24 | |### Explanation:- **B.2 Section**: This table is designed to help students predict whether the given elements are shiny or dull and if their predictions are correct. Students will need to fill out the table based on their observations and knowledge of the elements listed. - **C Section (Subatomic Particles)**: This table helps students identify subatomic particles for three elements: Iron, Bromine, and Gold. Students are expected to fill in the missing values for the number of protons, neutrons, and electrons based on the provided atomic number and mass number.- **D Section (Isotopes)**: This table focuses on the isotopes of Calcium (Ca) with different mass numbers. Students are required to identify the number of protons, neutrons, and electrons for each isotope provided in the table. Note that some values are already provided, and students will need to use their knowledge to complete the missing information. **Report Sheet - Lab 4****Questions and Problems****Q.3** A neutral atom has a mass number of 80 and has 45 neutrons. Write its complete symbol.**Q.4** An atom has two more protons and two more electrons than the atom in question 3. What is its complete symbol?

In chemistry, the general representation of an element or atom is given below: MzA Here, M is the…

Report Sheet-Lab 4 Questions and Problems Q.3 A neutral atom has a mass number of 80 and has 45 neutrons. Write its complete symbol. Q.4 An atom has two more protons and two more electrons than the atom in question 3. What is its complete symbol?

Report Sheet-Lab 4 Questions and Problems Q.3 A neutral atom has a mass number of 80 and has 45 neutrons. Write its complete symbol. Q.4 An atom has two more protons and two more electrons than the atom in question 3. What is its complete symbol?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

# Laboratory 4: Report Sheet - Lab 4

## B.2
| Element | Metal/Nonmetal | Prediction: Shiny or Dull | Correct? Yes/No |
|------------|-----------------|---------------------------|-----------------|
| Chromium | | | |
| Gold | | | |
| Lead | | | |
| Cadmium | | | |
| Silicon | | | |

## C. Subatomic Particles

| Element | Atomic Number | Mass Number | Protons | Neutrons | Electrons |
|-----------|----------------|--------------|---------|-----------|-----------|
| Iron | 27 | 19 | 30 | 13 | |
| Bromine | 80 | | | | |
| Gold | 197 | | 53 | 74 | |

## D. Isotopes

| Nuclear Symbol | Protons | Neutrons | Electrons |
|----------------|---------|----------|-----------|
| ⁴⁰₂₀Ca | 20 | 22 | |
| ⁴³₂₀Ca | 20 | 24 | 20 |
| ⁴⁶₂₀Ca | | 24 | |

### Explanation:
- **B.2 Section**: This table is designed to help students predict whether the given elements are shiny or dull and if their predictions are correct. Students will need to fill out the table based on their observations and knowledge of the elements listed.

- **C Section (Subatomic Particles)**: This table helps students identify subatomic particles for three elements: Iron, Bromine, and Gold. Students are expected to fill in the missing values for the number of protons, neutrons, and electrons based on the provided atomic number and mass number.

- **D Section (Isotopes)**: This table focuses on the isotopes of Calcium (Ca) with different mass numbers. Students are required to identify the number of protons, neutrons, and electrons for each isotope provided in the table.

Note that some values are already provided, and students will need to use their knowledge to complete the missing information.

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