Visual Worksheet: Atoms and Molecules

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A T O M I C
S T R U C T U R E
n u c l e u s p r o t o n s n e u t r o n s e l e c t r o n s o r b i t a l s
A. Draw a simple atomic structure and label the parts of it.
B. Read and complete the sentences with the words in the box.
An ________ is the smallest part of matter. 1 .
The ________ of an atom is like its "heart" and has protons and neutrons. 2 .
________ are positively charged particles found in the nucleus. 3 .
________ are negatively charged particles that move around the nucleus. 4 .
Neutrons are ________ particles found in the nucleus. 5 .
Electrons ________ around the nucleus in different energy levels. 6 .
The ________ of an atom is where most of its mass is concentrated. 7 .
Protons have a ________ charge, while electrons have a ________ charge. 8 .
The ________ is like the "sun" of the atom, and electrons "orbit" around it. 9 .
Atoms are so ________ that you need a special microscope to see them! 1 0 .
n u c l e u s e l e c t r o n s
p r o t o n s n e u t r o n s
c e n t e r t i n y
o r b i t p o s i t i v e
n e g a t i v e
a t o m