Chemistry Unit 8 Test

5.0(1)
studied byStudied by 5 people
GameKnowt Play
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/28

flashcard set

Earn XP

Description and Tags

Good Luck

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

29 Terms

1
New cards
Alkali Metals
Starts on fire and explodes in H20, 1 valence e-, 1+ charge -most reactive group
2
New cards
Alkine Earth Metals
2+ charge, 2 valence e-, very reactive but not as reactive as Alkine Metals
3
New cards
Transition Metals
Conducts e-, when hot glows different colors, Malleability,Ductility, Thermal Transfer, Lustrous
4
New cards
Nobel Metals
least reactive metals, used to make jewelry, wires and money, most conductive with heat and e-
5
New cards
Boron Group
3 valence e-,3+ charge ,soft elements
6
New cards
Carbon Group
4 valence e- ,4+ or 4- charge ,elements are essential to life
7
New cards
Nitrogen Group
5 valence e-,3- charge, bonds with nitrogen group
8
New cards
Oxygen Group
\-6 valence e-, 2- charge, forms ores with transition metals
9
New cards
Hologens
7 valence e-, 1- charge, lethal to living things; explodes when exposed to oxygen
10
New cards
Nobel Gases
8 valence e-, neutral charge, doesn’t form chemical bonds
11
New cards
Lanthanides
Used to make lasers and super conductors
12
New cards
Actinides
Radioactive, starts on fire when exposed to air
13
New cards
How do acids react with magnesium, iron and zinc
corrodes them
14
New cards
Acids in foods are:
sour
15
New cards
How does acids react with carbonates
Produces Carbon Dioxide when carbonates + bi carbonates are used
16
New cards
Acids turn litmus paper:
Red
17
New cards
Acids have more:
H+ ions (hydrogen Ions)
18
New cards
Bases taste:
Bitter
19
New cards
How do bases react with metals, magnesium, iron and zinc
They don’t do anything
20
New cards
How do bases react with carbonates
Does not react
21
New cards
Bases turn litmus paper
Blue
22
New cards
Bases have excess:
OH- Ions (Hydroxide Ions)
23
New cards
Why do bases feel slippery
They dissolve phospholipid bilayer of cell membrane and lipids (fat) come out
24
New cards
Why would food companies add acids to foods
Flavor agents, extend shelf life
25
New cards
Protons
\+ Charge, in nucleus, 2000x larger than -e
26
New cards
Neutrons
Neutral charge, in nucleus, 2000x larger than -e
27
New cards
Electrons
\- charge, “orbits” around nucleus, 2000x smaller than protons and neutrons
28
New cards
Isotope
Variations of an element that have differing amounts of neutrons in its nucleus
29
New cards
Why are the # of neutrons just approximations
this is b/c these elements are isotopes; these can differ because isotopes are averages