Question

label the elements
fill in the missing atomic numbers and symbols.
write the names in the blanks.
1.
ca
name: _______________
2.
6
______
name: _______________
3.
cu
name: _______________
4.
1
______
name: _______________
5.
fe
name: _______________
6.
al
name: _______________
7.
79
______
name: _______________
8.
si
name: _______________
9.
10
______
name: _______________
10.
k
name: _______________
answers: 1. calcium 2. carbon 3. copper 4. hydrogen 5. iron 6. aluminum 7. gold 8. silicon 9. neon 10. potassium

Explanation:

Step 1: Recall Atomic Numbers and Element Names

For each element, we use the periodic table to find the atomic number (top of the square) and the name from the symbol (or vice versa).

1. Ca

• Atomic number of Calcium (Ca) is 20. Name: Calcium.

2. Atomic number 6

• Element with atomic number 6 is Carbon (C). Name: Carbon.

3. Cu

• Atomic number of Copper (Cu) is 29. Name: Copper.

4. Atomic number 1

• Element with atomic number 1 is Hydrogen (H). Name: Hydrogen.

5. Fe

• Atomic number of Iron (Fe) is 26. Name: Iron.

6. Al

• Atomic number of Aluminum (Al) is 13. Name: Aluminum.

7. Atomic number 79

• Element with atomic number 79 is Gold (Au). Name: Gold.

8. Si

• Atomic number of Silicon (Si) is 14. Name: Silicon.

9. Atomic number 10

• Element with atomic number 10 is Neon (Ne). Name: Neon.

10. K

• Atomic number of Potassium (K) is 19. Name: Potassium.

Answer:

1. Atomic number: 20; Name: Calcium
2. Symbol: C; Name: Carbon
3. Atomic number: 29; Name: Copper
4. Symbol: H; Name: Hydrogen
5. Atomic number: 26; Name: Iron
6. Atomic number: 13; Name: Aluminum
7. Symbol: Au; Name: Gold
8. Atomic number: 14; Name: Silicon
9. Symbol: Ne; Name: Neon
10. Atomic number: 19; Name: Potassium