Page 14 - Utah Science Textbook
P. 14
Standard 1:
students will understand the
structure of matter.
Objective 1
Describe the structure of matter in terms of atoms and molecules. Terms to Know
o Atom
o Molecule
o Solid
o Liquid
o Gas
o Model
Introduction:
Have you ever tried to observe or study something that you could not see? Scientists for
hundreds of years have been concerned with the smallest particles that make up each and
every object in our natural world. Of course, that is the atom. How do scientists study
things they can’t see? They make models. A scientific model is a tool constructed by the
scientist based on all the known experimental evidence about a particular thing such as an
atom. The picture above is an artistic look at one model of the atom, showing the
electrons in orbit around the central nucleus. As time goes by and more experiments are
performed, models evolve and change to account for new understanding. In this chapter,
you will begin to learn about how the model of the atom was initially developed and how
it has changed over time into what we now have come to accept as the modern model of
the atom.
15
students will understand the
structure of matter.
Objective 1
Describe the structure of matter in terms of atoms and molecules. Terms to Know
o Atom
o Molecule
o Solid
o Liquid
o Gas
o Model
Introduction:
Have you ever tried to observe or study something that you could not see? Scientists for
hundreds of years have been concerned with the smallest particles that make up each and
every object in our natural world. Of course, that is the atom. How do scientists study
things they can’t see? They make models. A scientific model is a tool constructed by the
scientist based on all the known experimental evidence about a particular thing such as an
atom. The picture above is an artistic look at one model of the atom, showing the
electrons in orbit around the central nucleus. As time goes by and more experiments are
performed, models evolve and change to account for new understanding. In this chapter,
you will begin to learn about how the model of the atom was initially developed and how
it has changed over time into what we now have come to accept as the modern model of
the atom.
15
