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NerdMode > Chem Mid-term review > Flashcards

Chem Mid-term review Flashcards

1
Q

What is an intensive property?

A

a property that can’t been seen by the naked eye

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2
Q

What is an extensive property?

A

a property that can been seen by the naked eye

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3
Q

A solid has what comprehensibility, volume, and density?

A

no comprehensibility, definite volume, and has a high density

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4
Q

A liquid has what comprehensibility, volume, and density?

A

no comprehensibility, definite volume, and has a medium density

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5
Q

A gas has what comprehensibility, volume, and density?

A

true comprehensibility, no definite volume, and has a low density

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6
Q

Fusion occurs at what places?

A

the sun and the stars

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7
Q

Fission occurs at what places and releases more or less energy than Fusion.

A

releases the most energy and occurs in nuclear power plants

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8
Q

If an object has a density ___ than 1 g/mL or 1 g/cm3 it will ___.

A
  • lower,float

- higher,sink

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9
Q

What is a mixture?

A

a physical combination of 2 or more substances. On a molecular level, an assortment of different particles

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10
Q

What is a pure substance?

A

a pure sample that contains 1 ingredient. On a molecular level. all particles are the same

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11
Q

What is matter and what’s not considered matter?

A
  • A physical substance with mass and volume

- light, sound, and heat

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12
Q

What’s the difference between heterogeneous mixtures and homogeneous mixtures.

A

Homogeneous mixtures are evenly distributed (ex. liquids). While Heterogeneous mixtures are unevenly distributed/ visually distinguished (ex. pepper and salt)

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13
Q

List 5 pieces of safety equipment that would need in a lab room.

A

googles, gloves, apron, fire extinguisher, eyewash, safety blanket, and shower

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14
Q

What does it mean for a compound to be Ionic?

A

The electrical charge is balanced, so basically no extra atoms

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15
Q

What does it mean for a compound to be covalent?

A

Opposite of ionic, has extra atoms of the same element causing a imbalance of the total charge.

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16
Q

What’s the order of electron rings?

A

s, p, d, f

17
Q

What group name correlates with the group number?

1, 2 ,17 ,18

A

1 - Alkali Metals
2 - Alkaline earth metals
17 - Halogens
18 - Nobel gases

18
Q

What was Dalton known for?

A

Developed a modern atomic theory but was unaware of subatomic particles

19
Q

What was Rutherford known for?

A

found the nucleus stating that it is very small, positively charged, and dense

20
Q

What was Mendeleev known for?

A

father of the periodic table(1869)

21
Q

What was JJ Thomson known for?

A

stated that electrons are like raisins in plum pudding(+ and - mixed together)

22
Q

What was Schrodinger known for?

A

modeled electrons as waves

23
Q

What was Bohr known for?

A

planetary model of atom

24
Q

What was Moseley known for?

A

He filled in the left out blanks in his periodic table

25
Q

List the types of electromagnetic radiation in order of highest frequency to lowest frequency:

A

gamma, x-ray, ultraviolet(UV), visible light, infrared(IR), Microwaves, TV/Radio

26
Q

What’s the difference between a beta particle and alpha decay?

A

beta particle is an electron emitted from an unstable atom, while alpha decay is a nucleus emitted from an unstable atom

27
Q

Why is a cation smaller than the original neutral atom?

A

more protons, so the electrons are more attracted to the nucleus

28
Q

Why is a anion larger than the original neutral atom?

A

more electrons, so the electrons add another electron cloud

29
Q

Group 1 and 2 are part of what block?

A

S block

30
Q

Group 3-12(transition metals) are part of what block?

A

D block

31
Q

Group 13-18 are part of what block?

A

P block

32
Q

The inner transition metals are part of what block?

A

F block

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