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35 Cards in this Set
- Front
- Back
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Compound |
A chemical containing more than one element. Chemically bonded. |
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Mixture |
Different chemicals found together that are not chemically bonded |
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Element |
A material containing only one type of atom. |
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Soluble/insoluble |
Will dissolve/ Won’t dissolve |
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What is crude oil? |
Crude oil is a mixture of a very large number of compounds made up of animals and plants that decayed millions of years ago. |
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What is crude oil? |
Crude oil is a mixture of a very large number of compounds made up of animals and plants that decayed millions of years ago. |
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What are crude oils used to make? |
Plastic and fuels like petrol and diesel |
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What is crude oil? |
Crude oil is a mixture of a very large number of compounds made up of animals and plants that decayed millions of years ago. |
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What are crude oils used to make? |
Plastic and fuels like petrol and diesel |
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What does the molecular structure of Crude oil appear like? |
Long thin molecules |
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What is crude oil? |
Crude oil is a mixture of a very large number of compounds made up of animals and plants that decayed millions of years ago. |
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What are crude oils used to make? |
Plastic and fuels like petrol and diesel |
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What does the molecular structure of Crude oil appear like? |
Long thin molecules |
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How is crude oil separated? |
It is boiled at a very high temperature. Shorter chain molecules with a low boiling point evaporate first leaving the others behind. |
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What are the names of the three subatomic particles? State their mass, where they are in the atom and charge. |
Protons: +charge, go in the nucleus, mass of 1 amu
Neutrons: no charge, go in the nucleus, mass of 1 amu
Electrons: -charge, live on electron shells that orbit the nucleus, have no mass |
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What are the names of the three subatomic particles? State their mass, where they are in the atom and charge. |
Protons: +charge, go in the nucleus, mass of 1 amu
Neutrons: no charge, go in the nucleus, mass of 1 amu
Electrons: -charge, live on electron shells that orbit the nucleus, have no mass |
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Which number is bigger the atomic mass or atomic number? Where are they located? |
Atomic mass is smaller and goes at the top
Atomic number is bigger and goes at the bottom |
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What are the names of the three subatomic particles? State their mass, where they are in the atom and charge. |
Protons: +charge, go in the nucleus, mass of 1 amu
Neutrons: no charge, go in the nucleus, mass of 1 amu
Electrons: -charge, live on electron shells that orbit the nucleus, have no mass |
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Which number is bigger the atomic mass or atomic number? Where are they located? |
Atomic mass is smaller and goes at the top
Atomic number is bigger and goes at the bottom |
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If an element had an atomic mass of 9 and an atomic number of 4 how many of each subatomic particle would it have? |
Atomic number: 4= 4 electrons and 4 protons
Atomic mass: 9= protons+ neutrons. 4 protons means 5 neutrons |
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How many electrons can be on a shell. |
2 on the first and 8 on every shell there after |
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On a periodic table which are the rows and which are the columns? |
Period > rows Group ^ columns |
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On a periodic table which are the rows and which are the columns? |
Period > rows Group ^ columns |
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What does the number of the period and the number of the group suggest? |
Periods suggest how many groups. Groups suggest how many electrons their are on the outer shell. |
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What did dobereiner do? |
He put the elements into groups of three called triads. The one in the middle having a mean of the atomic mass of the others. |
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What did newlands do? |
He put them in groups of 8 in order of atomic mass. |
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What did mendeleev do? |
He put them in order of atomic mass leaving gaps for undiscovered elements |
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Why do group 1s float on water? |
The one electron on the outer shell makes the atom very large. The atom has a low mass for its size making it less dense than water. |
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Why do group 1 and 7 react well together and what do they form? |
They react well because together they make a full outer shell. They form halode salts. |
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Displacement |
When a more reactive element takes the place of a less reactive element. |
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The more shells a metal atom has... |
The lower the melting and boiling points. The more reactive they are |
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The more shells a non metal atom has.... |
The higher the melting boiling point. The less reactive the non metal |
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Name some of the properties of transition metals |
High melting points High density Strong Ductile Hard Interactive Conductors Shiny Malleable Useful as a catalyst |
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Where are transition metals located? |
Between groups 2 and 3 |
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What makes transition metals special? |
They don’t obey the simple chemical rules |
