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Chemistry > Atoms, Molecules And Ions > Flashcards

Atoms, Molecules And Ions Flashcards

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1
Q

What is a molecule?

A

Atoms bonded together

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2
Q

What is the formula for hydrochloric acid?

A

HCl

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3
Q

What is the formula for sulphuric acid?

A

H2SO4

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4
Q

What is the formula for nitric acid?

A

HNO3

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6
Q

Where are protons found in an atom?

A

In the nucleus

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7
Q

Where are neutrons found in an atom?

A

In the nucleus

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8
Q

Where are electrons found in an atom?

A

In energy levels

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9
Q

What is the relative mass of a proton?

A

1

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10
Q

What is the relative mass of a neutron?

A

1

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11
Q

What is the relative mass of an electron?

A

1/2000

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12
Q

What is the relative charge of a proton?

A

+1

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13
Q

What is the relative charge of a neutron?

A

0

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14
Q

What is the relative charge of an electron?

A

-1

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15
Q

What is relative atomic mass?

How do you calculate the relative atomic mass?

A

The relative atomic mass is the weighted average mass of all the isotopes of an element

Relative mass = (Isotope mass x isotope abundance)/100

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16
Q

Copper consists of 69% copper-63 and 31% copper-65. What is the relative atomic mass of copper?

A

Relative atomic mass = (69 x 63) + (31 x 65) divided by 100 = 63.62

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17
Q

If you knew the atomic number of an unknown atom how would you find the symbol?

A

Count up to the atomic number on the periodic table

18
Q

The electronic structure of silver is 2, 8, 9. What is the charge on a silver ion?

A

No. of protons: 19
No. of electrons: 18
(because the nearest noble gas structure is 2. 8. 8. Which is -1 from the electronic structure of a silver atom. 19 - 1 = 18)
No. of protons - no. of electrons = charge on ion
19 - 18 = 1
S(+1)

19
Q

What is the charge on ions in group number 7?

A

-1

20
Q

What I the charge on ions in group 2?

A

2+

21
Q

Oxygen is in group 6 of the periodic table. There are 6 electrons in the outer shell of oxygen. What is the charge on oxygen?

A

2-

22
Q

What are the 6 diatomic molecules?

A 
Hydrogen H2 
Oxygen O2
Clorine Cl2 
Bromine Br2
Iodine I2
Nitrogen N2
22
Q

What is the formula for ethanoic acid?

A

CH(3)CO(2)H

23
Q

Symbol for oxygen atom?
Symbol for oxygen molecule?
Symbol for oxygen ion?

A

Atom: O
Molecule: O2
Ion: O(2+)

Chemistry (11 decks)

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