Atoms
Elements
Matter
Periodic Table
Miscellaneous
100
A small particle that makes up all matter on Earth. Means "uncuttable"
What is an atom
100
A substance that cannot be chemically or physically broken down into any other substance. It's made up of only one kind of atom
What is an element
100
Law that states that matter is neither created nor destroyed, only changed in form when undergoing a chemical reaction.
What is the Law of Conservation of Matter
100
A row of elements across the periodic table.
What is a period.
100
All compounds are made up of two or more of these.
What are elements.
200
An uncharged particle in the nucleus of the atom.
What is a neutron
200
The elements in Group 18 of the periodic table have this name.
What are the noble gases.
200
Anything that has mass and takes up space.
What is matter
200
This is the number of protons in the nucleus of each atom of an element
What is the atomic number
200
True or false? In a modern atomic model, most of an atoms volume (the space it takes up) is occupied by its nucleus.
What is false. Most of its space is occupied by its electrons.
300
A positively charged particle in the nucleus of the atom
Proton
300
These substances are shiny, good conductors of heat and have luster.
What are metals
300
True or False? Hydrogen is not matter
What is true
300
This is the sum of the an atom's protons and neutrons
What is atomic mass
300
How many atoms of hydrgen are in a single molecule of water?
What is 2.
400
A negatively charged particle located outside the nucleus of an atom.
What is an electron
400
These are poor conductors of heat and electricity. They are dull in appearance and appear on the right side of the periodic table.
What is a non metal
400
A short, easy way to show a chemical reaction using symbols instead of words.
What is a chemical equation.
400
Elements in the same group have the same __________.
What is number of valence electrons.
400
How many valence electrons does Neon have?
What is 8.
500
Atoms of the same element that have a different number of neutrons in the nucleus, making their masses different.
What are isotopes
500
Elements that have characteristics of both metals and non metals
What are metalloids
500
What are the substances called at the beginning and end of a chemical reaction?
What are reactants and products.
500
When an atom loses or gains electrons, it becomes this.
What is an ion.
500
Name one sign that a chemical reaction has taken place.
What is gas bubbles, a new substance forms, etc
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