Atomic Mass
Atomic mass is the mass of an atom of a chemical element. It is typically measured in atomic mass units (amu), where 1 amu is equal to 1/12th the mass of a carbon-12 atom. Atomic mass is a crucial concept in chemistry as it helps in determining the mass of a particular element and in calculating molar mass.
How to Calculate Atomic Mass
The atomic mass of an element is usually found on the periodic table. It is a weighted average of the masses of the isotopes of that element, taking into account the abundance of each isotope.
The formula to calculate atomic mass is:
Atomic mass = (mass of isotope 1 * abundance of isotope 1) + (mass of isotope 2 * abundance of isotope 2) + ...
Study Guide for Atomic Mass
- Understand the concept of atomic mass and its significance in chemistry.
- Learn how to read the atomic mass from the periodic table for different elements.
- Practice calculating atomic mass using the isotopic composition of elements.
- Understand how atomic mass is related to molar mass and its importance in chemical calculations.
- Explore the concept of average atomic mass and how it is calculated using isotopic abundances.
By understanding atomic mass, you will have a solid foundation in chemistry and be able to perform various calculations related to chemical reactions, stoichiometry, and more.
.◂Science Worksheets and Study Guides Third Grade. Relationships among living things
Study Guide
Relationships among living things 
Activity Lesson
Relationships Among Living Things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Worksheet/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things Vocabulary/Answer key
Relationships among living things
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE
From Molecules to Organisms: Structures and Processes
Create representations to explain the unique and diverse life cycles of organisms other than humans (e.g., flowering plants, frogs, butterflies), including commonalities such as birth, growth, reproduction, and death.
Unity and Diversity
Construct an argument from evidence to explain the likelihood of an organism’s ability to survive when compared to the resources in a certain habitat (e.g., freshwater organisms survive well, less well, or not at all in saltwater; desert organisms survive well, less well, or not at all in woodlands).
Create models that illustrate how organisms and their habitats make up a system in which the parts depend on each other.