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Science > Chemistry 2 > Flashcards

Chemistry 2 Flashcards

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0
Q

What’re the two parts of the atom?

A

Nucleus

Orbitals (energy levels) (electron cloud)

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1
Q

What is the atom?

A

The basic building blocks of an element

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2
Q

How is the neutron always charged?

A

Positively

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3
Q

What is the center of the atom?

A

Nucleus

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4
Q

What makes up the nucleus?

A

Protons and neutrons

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5
Q

What is surrounding the atom?

A

“Cloud” or orbitals that contain electrons

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6
Q

What is the charge of electrons?

A

Negative charge

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7
Q

What is the charge of neutrons?

A

Neutral charge

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8
Q

What is the first energy level?

A

Can only hold 2 electrons

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9
Q

What is the second energy level?

A

Can hold up to 8 electrons

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10
Q

What is the third energy level?

A

Can hold 18 electrons

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11
Q

What do atoms contain?

A

The same number of electrons and protons

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12
Q

What’re the 4 elements and how much of the human do they makeup?

A

Hydrogen, oxygen, nitrogen, carbon

96%

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13
Q

What is compound?

A

When two or more elements are combined

Example:
H20= 2 hydrogen and 1 oxygen

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14
Q

What happens when atoms bond

A

Compounds are formed

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15
Q

What happens when the energy levels of atoms do not have the maximum number of electrons?

A

The atom is unstable and it looks to bonds

16
Q

What are the 2 ways atoms bond?

A

Covalent bonding

Ionic bonding

17
Q

What is covalent bonding

A

The sharing of electrons

18
Q

How many nonmetald can bond covalent lay?

A

2

19
Q

What does the covalent bonds form?

A

A molecule

20
Q

What is ionic bonding?

A

Transfer of electron

21
Q

What happens to the atoms during ionic bonding

A

One atom loses an electron and one gains an election

22
Q

What happens when an atom gains or loses an electron?

A

It becomes an ion

23
Q

What will bond ironically?

A

2 metals or a metal and a nonmetal

24
Q

What is an example of an ionic bond?

A

NaCL- table salt

25
Q

What is a mixture?

A

Substances the retain their physical properties and do not combine

Rocks and water
Oil and vinager

26
Q

What are two types of mixture

A

Heterogeneous (different things together) and homogeneous (same thing together)

27
Q

What is a solution?

A

When substances combine evenly and can’t be separated out

Kool aid, hot coco

28
Q

What is the solute?

A

The substance being dissolved

29
Q

What is the substance it is being dissolved?

A

Solvent

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