C1 1.1 to C1 1.5

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  • Created by: ja7sa096
  • Created on: 19-04-16 19:49
What are all substances made up of?
Atoms
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What is an element?
A substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance
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On which side of the periodic table are the metals?
Left
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What do the columns in the periodic table represent?
The groups of elements
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What is a compound?
A substance made when two or more elements are chemically bonded together
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What does an atom contain?
Nucleus and electrons
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What is the nucleus made of?
Protons and neutrons
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Any atom has the same number of ....... as ........
Protons, electrons
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What is the overall charge of an atom and why?
0 because the protons and electrons cancel each other out
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What are the relative charges of a proton, neutron and electron?
+1, 0, -1
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What does the atomic number tell us?
The number of protons (and therefore electrons)
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What does the mass number tell us?
The number of neutrons + protons
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How do we calculate the number of neutrons?
Mass number- atomic number
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Is the atomic number on the top or the bottom?
Bottom
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What are the elements arranged in the periodic table by?
Their atomic number
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What are the electrons in an atom arranged in?
Energy levels/ shells
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What do the atoms in the same groups of the periodic table have in common?
They have the same number of electrons in their outermost shells
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What does the number of electrons in an atom's outermost shell determine?
They way the element reacts
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Why are the atoms of Group 0 elements so unreactive?
The atoms all have very stable arrangements of electrons (full outer shells)
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How do atoms react together?
Non metals and metals transfer electrons, non-metals share elctrons
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What are ions?
A charged particle produced by the loss or gain of electrons
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What type of ions do metal atoms form?
Positively charged
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What type of ions do non-metals form?
Negatively charged
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What are ionic bonds?
Strong forces of attraction between the positive and negative ions in a compound that form chemical bonds
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What charge does a metal/non-metal compound have?
0, charges on the ions cancel each other out
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What is covalent bonding?
When two or more non-metals bond by sharing electrons
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What does the chemical formula of an ionic compound tell us?
The ratio of each type of ion in the compound (e.g. Mg 2+)
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how does the mass of reactants compare with the mass of products in a chemical reactions?
As no new atoms are ever created or destroyed in a chemical reaction: the total mass of reactants= the total mass of products
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Other cards in this set

Card 2

Front

What is an element?

Back

A substance made up of only one type of atom. An element cannot be broken down chemically into any simpler substance

Card 3

Front

On which side of the periodic table are the metals?

Back

Preview of the front of card 3

Card 4

Front

What do the columns in the periodic table represent?

Back

Preview of the front of card 4

Card 5

Front

What is a compound?

Back

Preview of the front of card 5
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