Atoms consist of electrons surrounding a nucleus that contains protons and neutrons.
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Neutrons are?
Neutrons are neutral.
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Protons and electrons are?
Protons and electrons are electrically charged: protons have a relative charge of +1 and electrons have a relative charge of -1.
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All substance are made of tiny particles called?
All substances are made of tiny particles called atoms.
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An element is a substance made of only what? (complete sentence)
An element is a substance that is made of only one sort of atom
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The elements in a group have? (complete sentence)
The elements in a group have similar properties to each other.
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The horizontal rows in the periodic table are called?
The horizontal rows in the periodic table are called periods.
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What are shown on the left of the periodic table?
The metals are shown on the left of the periodic table.
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What are shown on the right of the periodic table?
The non-metals are shown on the right of the periodic table.
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Describe an atom and what it is made of:
An atom has a small central nucleus made up of smaller sub-atomic particles called protons and neutrons. The nucleus is surrounded by even smaller sub-atomic particles called electrons.
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The number of electrons in an atom is...? (complete sentence)
The number of electrons in an atom is equal to the number of protons in its nucleus.
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What do the electrons in an atom occupy and are called?
The electrons in an atom occupy energy levels and are called shells.
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The atoms in an element are:
The atoms in an element are all the same type
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How many protons, neutrons and electrons are there in a 27Al13 atom?
13 protons, 14 neutrons and 13 electrons
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Which of the following does the nucleus contain?
The nucleus contains protons and neutrons.
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What is the atomic number of an atom?
The atomic number of an atom is the number of protons it contains.
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Which electronic structure is correct for an element with 17 electrons? 10,7 or 8,9 or 2,8,7
2,8,7
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Why would you never find a compound in a periodic table?
You will never find a compound in the periodic table, because these consist of two or more different elements joined together by chemical bonds.
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Group 1 elements are reactive metals called?
Group 1 elements are reactive metals called the alkali metals.
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Group 0 elements are unreactive non-metals called?
Group 0 elements are unreactive non-metals called the noble gases.
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Group 7 elements are?
Group 7 elements are halogens.
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They are called the alkali metals because?
They are called the alkali metals because they form alkaline compounds.
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Why is sodium stored under oil?
Sodium is stored under oil to keep it away from air and water.
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When an element from group 1 reacts with water:
A metal hydroxide and hydrogen are formed.
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What do the elements in a group have the same number of?
The elements in a group have the same number of electrons in the highest occupied energy level or outer shell.
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Other cards in this set
Card 2
Front
Neutrons are?
Back
Neutrons are neutral.
Card 3
Front
Protons and electrons are?
Back
Card 4
Front
All substance are made of tiny particles called?
Back
Card 5
Front
An element is a substance made of only what? (complete sentence)
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