basic chem duel Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What is an atom?

A

-smallest unit of matter
-they are made of subatomic particles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Protons

A

-they are positively charged and are found in the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Neutrons

A

-they are nuetral and are found in the nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Electrons

A

-they are negatively charged and are found in the orbital
-they have no significant mass

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The number of protons determine what?

A

it determines what atom it is

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The atomic number equals what

A

the number of protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How do you get the number of neutrons?

A

mass - protons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How do you get the number of electrons?

A

the number of protons in a neutral atom

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How do you find the charge?

A

protons - electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

find the missing answers

Li^-2
Protons ?
Neutrons ?
Electrons ?

A

p=3
n=4
e=5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does valence mean?

A

A whole number that represents the ability of an atom or a group of atoms to combine with other atoms or groups of atoms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is a valence electron?

A

the electrons on the outer orbital and they determine bonding

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the three types of bonds? Describe.

A

convilent bond - strongest, 2 atoms share electrons
ionic bond - attraction between 2 attoms based on charge
hydrogen bond - weakest,it’s like an ionic bond but with hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does pH stand for?

A

potential of H+(hydrogen)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is the scale for pH?

A

it from 0 to 14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

True or False

The higher the number the more acidic it is

A

false from 0 to 7 is acid from 7 to 14 is bases

17
Q

How would you calculate pH?

A

-log [concentration of H+ ions]

18
Q

How would you calculate pOH?

A

-log [concentration of hydroxide ions]

19
Q

True or false

Hydrogen and Hydroxide dont play an inverse relaionship

A

False
-the lower the hydroxide the higher the hydrogen the more acidic
-The higher the hydroxide the lower the hydrogen the less acidic

20
Q

Solute

A

Substances that gets dissolved

21
Q

Solvent

A

Substance that dissolved something

22
Q

Dissociation

A

compound breaks apart

23
Q

What is a buffer?

A

it prevents change in pH, it’s weak acids or bases that absorbs H or OH

24
Q

lable each compound

H2SO4 + NaCl + KPO4 = HSO4 + Na + KPO4H

A

H2SO4 - is acid
NaCl - neutral
KPO4 - buffer

If it releases a H it’s acid, if it doesnt gain or lose H it’s N, if it gains H its a buffer