P. 256 #1 What part of an atom is involved in chemical bonding?
1) Electrons are involved in bonding.
Steps to electron dot diagrams and why atoms bond (or don’t)
Chemical symbols, valence electrons
2) What is a chemical symbol?
3) Copy atom and write its chemical
Hydrogen ___ helium___
Lithium ___ boron ___
Carbon ___ nitrogen ___
Oxygen ___ fluorine ___
Neon ___ sodium ___
Silicon ___ chlorine ___
4) By structure, which electrons in an atom could bond?
ONLY the outer ring of electrons.
5) Valence electrons – the electrons in the outer ring (count from left on Periodic Table)
6) Hydrogen has ______ valence electron(s).
7) Helium has ______ valence electron(s).
Carbon has ______ valence electron(s).
9) Fluorine has ______ valence electron(s).
10) Neon has ______ valence electron(s).
11) Most ionic compounds have a regular ________________
P. 256 12) Covalent compounds come in ______________
P. 258
13) metallic bond
HW: Use a complete sentence to answer questions 1 - 3
From Tuesday:
Read pp. 248 – 256
P. 248 Use a complete sentence to answer 1-3 and challenge question
1) In CO2, the ratio of C to O is?
1 C to two oxygen
2) In CH4, the ratio is?
3) In H2SO4 the ratio of H to S?
**The ratio of S to O?
4) Challenge: which two compounds in the table have a 1:1 ratio of carbon to oxygen?
5) ionic bond
6) covalent bond
7) molecule
polar covalent bond
Homework: bring to class completed Thursday
P. 256 Use a complete sentence to answer 1-3
Please staple / add to Tuesday’s assignment
