Matter
Atoms & Subatomic Particles
Elements
The Periodic Table
Electrons
100
What is the basic unit of matter and the smallest particle of an element that can exist alone?
What is the atom
100
What are the three subatomic particles, or parts, of an atom?
What are the electron, neutron & proton
100
What do we call the chart that organizes all the elements into categories?
What is the Periodic Table
100
The columns (going down) on the periodic table are called?
What are groups
100
Name one property or characteristic of electrons.
They are always moving. They spin fast around the nucleus. They can move in any direction. They must stay in their own energy level or shell.
200
What is a substance made of atoms with the same number of protons that cannot be broken down chemically?
What is an element
200
What charge does an electron have?
a negative charge
200
What are atoms with the same number of protons, but different numbers of neutrons called?
What are isotopes
200
The rows (going across) on the periodic table are called?
What are the periods
200
How do you find the number of electrons on the periodic table?
Find the electron configuration. It is the same as the atomic number or number of protons
300
What is the smallest unit of most compounds made of two or more atoms?
What is a molecule
300
What charge does a neutron have?
a neutral charge
300
Which subatomic particle, or part, of an atom gives the element its identity?
What is the proton
300
Each group of the periodic table has the same number of what?
Valence electrons
300
Are electrons included in the atomic mass of an atom?
No, they are too small and have too little mass to be counted
400
A substance that has mass and takes up space
What is matter
400
What charge does a proton have?
a positive charge
400
What element has the symbol Cu?
What is copper
400
The periods of the periodic table have the same number of what?
electron shells or energy levels
400
What are the electrons called that are located in the atom’s outermost shell?
What are valence electrons
500
What is a substance formed by the chemical combination of two or more elements in definite proportions?
What is a compound
500
What subatomic particles, or parts of an atom are located in the nucleus of the atom?
What are the protons & neutrons
500
How many elements occur naturally on Earth?
92
500
What is the ease and speed with which an element combines, or reacts, with other elements or compounds
What is reactivity
500
What are the seven areas surrounding the nucleus of an atom called that contains the electrons?
What are electron shells or energy levels
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