fill in the blank\nuse the vocabulary words from the vocabulary matching section to fill in the missing…

fill in the blank\nuse the vocabulary words from the vocabulary matching section to fill in the missing information in the passage below\nmatter is anything that has mass and takes up space. the primary constituent of matter is called an \nand is made up of \neach atom is made of smaller particles, known as subatomic particles. in the \n, or middle, of an atom are two types of subatomic particles: \nand \nthe positively charged particle in the nucleus of an atom are called \nwhile the uncharged particles in the nucleus are called \norbiting the nucleus of an atom is a cloud of negatively charged \nthese negatively charged particles are much smaller in mass than protons and neutrons, so much so that they do not contribute a significant amount to the mass of an atom. therefore, to calculate the \nof an atom, you find the sum of the protons and neutrons found in the atom.

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