Name: ___________________________________ Period:___ Date:______
Dekalb Reads Assignment 3.1 A
Atomic Structure
Read pages 70-72 and answer the questions
USE YOUR OWN TEX T BOOK: SCORE
3 POINTS
What do atoms determine?
Aluminum is light weight and easy to crush. Why?
Who was Democritus?
What did Democritus suggest about universe?
What does the word atom mean?
when did Chemistry begin to develop?
Who proposed the atomic theory in 1808?
What are the building blocks of molecules?
What is atom?
Atoms are made of three particles. What are they?
What is nucleus?
Name the particles the nucleus of an atom is made of .
What are the similarities between proton and neutron?
What is the difference between proton and neutron?
What are electrons?
What is unique for each element?
Even though atoms are made of charged protons and electrons, they don’t have a charge on them. Why?