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Atoms, Elements, and the Periodic Table
Terms in this set (20)
Anything that has mass and takes up space.
A small particle that makes up most types of matter.
Law of Conservation of Matter
Matter is not created or destroyed, it only changes form.
Invisible negatively charged particles that orbit the nucleus.
The positively charged central part of an atom.
The positively charged particles in the nucleus.
The uncharged particles in the nucleus.
Matter made of only one kind of atom.
The number of protons in the nucleus of each atom. It is the top number in the periodic table block.
Atoms of the same element that have different numbers of neutrons.
The number of protons plus the number of neutrons.
The weighted average mass of the isotopes of an element, it is the bottoms number on the periodic table block.
With a shiny or metallic luster, these are great conductors of heat and electricity.
Elements that are usually dull in appearance, most are poor conductors of heat and electricity. Many are gasses at room temperature. Ones in the form of a solid are brittle.
Elements that have characteristics of metals and nonmetals. On the periodic table that are between metals and nonmetals. They are solid at room temperature.
Matter that has the same composition and properties throughout.
A substance whose smallest unit is made up of atoms of more than one element bonded together.
When two or more substances come together but don't combine to make a new substance.
The same throughout, also known as a solution.
THIS SET IS OFTEN IN FOLDERS WITH...
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