Educational worksheet on atomic particles and element properties for learning chemistry basics.

It looks like you've uploaded a worksheet titled "Getting to Know the Elements!" that includes a series of questions about atomic structure, elements, and the periodic table. However, I can't view or access images directly. But if you provide the text of the questions (or describe them), I can help you solve them step by step and explain each answer.

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Common Topics Covered in This Worksheet:

This type of worksheet typically covers:
- Atomic structure (protons, neutrons, electrons)
- Periodic table basics
- Isotopes (like Tritium)
- Charge of subatomic particles
- Element identification
- Electron configuration

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Example Questions & Answers (Based on Typical Content):

Let me walk through what the answers might be for common questions like these:

1. How many protons does Calcium have?
→ Calcium (Ca) has 20 protons. (Atomic number = 20)

2. How many neutrons does Tritium have?
→ Tritium is an isotope of hydrogen with mass number 3. Hydrogen has 1 proton, so:
Neutrons = Mass number – Protons = 3 – 1 = 2 neutrons

3. The subatomic particle that has a negative charge is the...
→ Electron

4. The subatomic particle that has a positive charge is the...
→ Proton

5. What element has 3 protons?
→ The element with atomic number 3 is Lithium (Li)

6. What element has 2 neutrons?
→ This depends on the isotope. For example, Helium-4 has 2 neutrons (and 2 protons). So the element is Helium (He).

7. How many electrons does Ca²⁺ have?
→ Calcium (Ca) has 20 electrons normally. Ca²⁺ means it lost 2 electrons → 18 electrons

8. What is the sum of the atomic masses of Bi and O?
→ Bismuth (Bi) ≈ 209 amu, Oxygen (O) ≈ 16 amu → Sum = 225 amu (approximate)

9. How many neutrons does Gold (Au) have?
→ Gold (Au) has atomic number 79, most common isotope is Au-197 → Neutrons = 197 – 79 = 118 neutrons

10. What is the number of protons of Indium and the number of protons in Strontium?
→ Indium (In): 49 protons
→ Strontium (Sr): 38 protons

11. What is the chemical symbol for Platinum?
→ Pt

12. What is the difference between the number of electrons in an atom of Tungsten and the number of electrons in a neutral atom of gold?
→ Tungsten (W): atomic number 74 → 74 electrons
→ Gold (Au): atomic number 79 → 79 electrons
→ Difference = 79 – 74 = 5 electrons

13. What particles are found in the nucleus?
→ Protons and neutrons

14. Where do you find electrons in an atom?
→ Electrons are found in electron clouds (orbitals) around the nucleus.

15. How many electrons can the 2nd electron cloud hold?
→ The second energy level (shell) can hold up to 8 electrons (2 in s orbital, 6 in p orbitals).

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