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Q 1/27
Score 0
The smallest unit of an element that maintains the properties of that element.
30
Atom
Q 2/27
Score 0
A subatomic particle that has a negative charge.
30
Electron
27 questions
Q.
The smallest unit of an element that maintains the properties of that element.
1
30 sec
Q.
A subatomic particle that has a negative charge.
2
30 sec
Q.
In physical science, an atom's central region, which is made up of protons and neutrons.
3
30 sec
Q.
A subatomic particle that has a positive charge and that is located in the nucleus of an atom; the number of protons in the nucleus is the atomic number, which determines the identity of an element.
4
30 sec
Q.
A subatomic particle that has no charge and that is located in the nucleus of an atom.
5
30 sec
Q.
A region around the nucleus of an atom where electrons are likely to be found.
6
30 sec
Q.
The number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element.
7
30 sec
Q.
The sum of the numbers of protons and neutrons in the nucleus of an atom.
8
30 sec
Q.
An arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same column, or group.
9
30 sec
Q.
A one-, two-, or three-letter abbreviation of the name of an element.
10
30 sec
Q.
The weighted average of the masses of all naturally occurring isotopes of an element.
11
30 sec
Q.
An element that is shiny and that conducts heat and electricity well.
12
30 sec
Q.
An element that conducts heat and electricity poorly.
13
30 sec
Q.
An element that has properties of both metals and nonmetals.
14
30 sec
Q.
A vertical column of elements in the periodic table; elements in a group share chemical properties.
15
30 sec
Q.
In chemistry, a horizontal row of elements in the periodic table.
16
30 sec
Q.
An interaction that holds atoms or ions together.
17
30 sec
Q.
An electron that is found in the outermost shell of an atom and that determines the atom's chemical properties.
18
30 sec
Q.
The process in which atoms are rearranged and chemical bonds are broken and formed to produce a chemical change of a substance.
19
30 sec
Q.
A combination of chemical symbols and numbers to represent a substance.
20
30 sec
Q.
A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products.
21
30 sec
Q.
A substance that participates in a chemical reaction.
22
30 sec
Q.
A substance that forms in a chemical reaction.
23
30 sec
Q.
The law that states that mass cannot be created or destroyed in ordinary chemical and physical changes.
24
30 sec
Q.
A chemical reaction that requires energy INPUT, usually as HEAT.
25
30 sec
Q.
A chemical reaction in which energy is RELEASED to the surroundings, usually as HEAT.
26
30 sec
Q.
The law that states that energy cannot be created or destroyed but can be changed from one form to another.
