Properties of Lead:
- Atomic number: 82
- Symbol: Pb
- Color: Bluish-white
- State: Solid at room temperature
- Density: 11.34 grams per cubic centimeter
- Melting point: 327.5°C
- Boiling point: 1749°C
Uses of Lead:
Lead has been used by humans for thousands of years. Some common uses of lead include:
- Manufacturing of lead-acid batteries
- Construction of buildings (in the form of lead sheets and pipes)
- Production of ammunition and radiation shielding
- Historically, lead was used in paints, though this use has been largely discontinued due to health concerns
Health and Environmental Impact:
While lead has many useful properties, it is also toxic to humans and animals. Here are some important points to remember:
- Lead poisoning can occur through ingestion or inhalation of lead particles
- Children are particularly vulnerable to the effects of lead poisoning
- Lead exposure can cause developmental delays, learning difficulties, and other health problems
- Proper disposal and recycling of lead-containing products is essential to prevent environmental contamination
Fun Fact:
Did you know that the chemical symbol for lead, Pb, comes from the Latin word "plumbum"? This is also where the English word "plumbing" comes from, as lead pipes were commonly used in plumbing systems in ancient times.
[Lead] Related Worksheets and Study Guides:
.◂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.