Science - 2017-18

6.4 d-e - Bonding & Formulas

The student will investigate and understand that all matter is made up of atoms. Key concepts include

d) two or more atoms interact to form new substances, which are held together by electrical forces (bonds); and

e) compounds may be represented by chemical formulas.


Bloom's Levels:  Analyze; Understand

Adopted: 2010

BIG IDEAS

  • Atoms are the building blocks of matter.
  • Atoms can combine in a variety of ratios to create compounds, represented by chemical formulas.

  • I can model chemical reactions, such as the combustion of diesel in the school bus engine.
  • I can describe the compounds in my food and drinks.

UNDERSTANDING THE STANDARD

  • Two or more atoms of different elements may combine to form a compound.
  • Compounds can be represented by chemical formulas. Each different element in the compound is represented by its unique symbol. The number of each type of element in the compound (other than 1) is represented by a small number (the subscript) to the right of the element symbol.

ESSENTIALS

In order to meet this standard, it is expected that students will

e) identify the name and number of each element present in a simple molecule or compound, such as O2, H2O, CO2, or CaCO3.


KEY VOCABULARY

atom, proton, neutron, electron, nucleus, atomic number, element, compound, matter, chemical equation, chemical change, physical change

Updated: Nov 18, 2017