Chapter 1-EL1 + EL2 Elements Flashcards

Atomic structure

1
Q

Where is most of the mass of an atom concentrated?

A

The nucleus

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2
Q

What is the diameter of the atomic nucleus compared to the atom as a whole?

A

Small

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3
Q

What is the relative charge of a proton?

A

-1

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4
Q

What is the relative size of a proton?

A

1

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5
Q

What is the relative size of a electron?

A

1/2000

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6
Q

What is the symbol for mass number?

A

A

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7
Q

What is the relative charge for an electron?

A

-1

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8
Q

What is the relative charge of a neutron?

A

0

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9
Q

What is the relative size of a nuetron?

A

1

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10
Q

What is the symbol for atomic number?

A

Z

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11
Q

What is the mass number of an element?

A

The number of protons plus neutrons inside of an atoms nucleus

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12
Q

What is the atomic number on an element?

A

The number of protons in an atom

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13
Q

Which number is the atomic number in the periodic table?

A

The bottom one

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14
Q

Which number is the mass number in the periodic table?

A

The top one

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15
Q

What is an Isotope?

A

Atoms of the same element containing different mass numbers, different number of neutrons

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16
Q

What two types of particles are in the nucleus?

A

Protons and neutrons

17
Q

What do all elements have in common?

A

Same atomic number

18
Q

Why do isotopes have the same reactivity and chemical properties?

A

They have the same configuration of electrons

19
Q
A
20
Q

D

A
21
Q

How do most elements exist naturally?

A

As a mixture of isotopes

22
Q

What is relative atomic mass an average of?

A

Relative isotopic mass, taking isotopic abundance into account

23
Q

What determines the chemical properties of an element?

A

The number and arrangement of electrons

24
Q

What often determines the physical properties of an element

A
25
Q

What takes up the most space in atom?

A

Electrons in their shells

26
Q

What is the process in stars to generate energy and form heavier elements?

A

Nuclear fusion

27
Q

What conditions are required

A