Question

periodic table scavenger hunt!
prework part 1: periodic table practice
instructions: using your periodic table as your
oad - map,\ answer the following questions!

1. i have an atomic mass of 197. who am i?
2. i have 12 electrons and a charge of 2+. who am i?
3. i have an atomic number of 18. who am i?
4. i am an alkali metal in the period 2. who am i?
5. we are liquid at room temperature. who am i?
6. i am a metalloid located in period 3 and group 14. who am i?
7. indium has a charge of - 3. how many protons and how many electrons does it have?

of protons: ____ # of electrons: ____

1. even though my family is called alkali metals, i am not a metal. who am i?
2. i am an element that is 10 times the mass of helium. who am i?
3. i am in period 5 group 11. who am i?
4. i have 19 protons. who am i?
5. i am an inert gas in period 2. who am i?
6. i am a transition metal in group 10 with 31 neutrons. who am i?
7. i am named after the united states since i was discovered here. what is my name and how many protons do i have?

____, # protons: ____

1. i am the only halogen that is a liquid at room temperature. who am i?
2. what is the name of the element with the symbol \sn\?

Explanation:

Step1: Recall atomic mass knowledge

The element with an atomic mass of 197 is Gold (Au).

Step2: Use electron - charge relationship

An atom with 12 electrons and a + 2 charge has 12 + 2=14 protons, which is Magnesium (Mg).

Step3: Identify by atomic number

An element with an atomic number of 18 is Argon (Ar).

Step4: Recall alkali metal in period 2

The alkali metal in period 2 is Lithium (Li).

Step5: List liquid elements at room - temperature

The elements liquid at room temperature are Mercury (Hg) and Bromine (Br).

Step6: Locate metalloid in period 3 and group 14

The metalloid in period 3 and group 14 is Silicon (Si).

Step7: Analyze indium's charge and subatomic particles

Indium (In) has an atomic number of 49, so the number of protons is 49. With a charge of - 3, the number of electrons is 49+3 = 52.

Step8: Identify non - metal in alkali metal family

Hydrogen (H) is in the alkali metal family but is not a metal.

Step9: Calculate element mass relative to Helium

Helium has an atomic mass of 4. An element 10 times its mass has an atomic mass of 40, which is Calcium (Ca).

Step10: Locate element in period 5 group 11

The element in period 5 group 11 is Silver (Ag).

Step11: Identify element by number of protons

An element with 19 protons is Potassium (K).

Step12: Identify inert gas in period 2

The inert gas in period 2 is Neon (Ne).

Step13: Determine transition metal in group 10 with 31 neutrons

Nickel (Ni) in group 10 has an atomic number of 28. With 31 neutrons, it is a common isotope of Nickel.

Step14: Identify element named after the United States

Americium (Am) is named after the United States, and it has 95 protons.

Step15: Identify liquid halogen

The only halogen that is a liquid at room temperature is Bromine (Br).

Step16: Recall element symbol

The element with the symbol "Sn" is Tin.

Answer:

1. Gold (Au)
2. Magnesium (Mg)
3. Argon (Ar)
4. Lithium (Li)
5. Mercury (Hg), Bromine (Br)
6. Silicon (Si)
7. # of protons: 49, # of electrons: 52
8. Hydrogen (H)
9. Calcium (Ca)
10. Silver (Ag)
11. Potassium (K)
12. Neon (Ne)
13. Nickel (Ni)
14. Americium (Am), 95
15. Bromine (Br)
16. Tin