7th Grade Lesson 1 Vocabulary Atoms and Elements

atom

• anything that has mass

• an individual particle of an element

  
  

• anything you can see

Tags

NGSS.MS-PS1-1

atomic mass

• the mass of a single atom; all atoms of an element have approximately the same atomic mass.

  
  

• the size of an atom; all atoms have very different sizes

• when you combine several atoms together to make a molecule

Tags

NGSS.MS-PS1-1

chemical symbol

• this is a picture that explains what the atom is used for

• the size of the atom represented with an image

• a shorthand notation of one, two, or three letters that represent the name of the element

  
  

constraint

• it is the plan on how to create an engineering design that works

• the requirements that must be met for an engineering solution to be successful

  
  

• a limitation on the range of possible solutions to a design

  
  

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

criteria

• the requirements that must be met for an engineering solution to be successful

  
  

• a limitation on the range of possible solutions to a design

  
  

• this is the design that works best for a solution

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

element

• anything that takes up space

• the smallest building block of mass

• a unique particle of matter that is a fundamental building block of matter

  
  

periodic table of elements

• this is a book that tells you all about each element int he world

• a table that lists all of the known elements and groups them into columns by important shared properties

  
  

• this is the book that Dimitri Mendeleev wrote