Chapter 4.1 - The Variety Of Compounds Flashcards
1
Q
True or False. The properties of compounds are the same as the elements that make up the compound.
A
False (they are different)
2
Q
What are some characteristics of sodium chloride?
A
- White, cubed crystals at room temperature
- Hard, brittle crystals
- Melting is 800 degrees c to liquid salt
- Does not react with other substances
3
Q
What are some properties of sodium?
A
- Shiny, soft, solid, metallic
- Melting point is 98 degrees
- High reactivity
4
Q
What are some properties of chlorine?
A
- Pale green gas with choking odor
- Slightly soluble in water
- Highly reactive
- Nonmetal must be cooled to 234 C before it turns to liquid
5
Q
Properties of carbon dioxide?
A
- Colorless, odorless, tasteless gas at room temperature
- When cooled below -80 C, changes to dry ice
- Soluble in water, weak conductor
- Used to put out fires & necessary for photosynthesis
6
Q
Properties of carbon?
A
- Nonmetal
- Unreactive at room temperature
- Excellent source of heat
7
Q
Properties of oxygen?
A
- Tasteless, odorless, colorless gas
- Becomes liquid at -183 C
- Slightly soluble in water
- Most abundant elements in earths crust
- More reactive than carbon
8
Q
Properties of water?
A
- Occurs in all 3 states of matter
- Freezes at 0 C, becomes gas at 100 C
- Universal solvent
- Stable compound
- Does not react with many substances
9
Q
Properties of hydrogen?
A
- Colorless, odorless, tasteless gas
- Lightest, most abundant element in the universe
- Nonmetal
- Slightly soluble in water
- Reactive
- Turns to liquid at -253 C
10
Q
What are the components of sodium chloride?
A
Sodium & chlorine.
11
Q
What are the components of carbon dioxide?
A
Carbon & oxygen.
12
Q
What are the components of water?
A
Hydrogen & oxygen.
13
Q
What is another name for water?
A
Dihydrogen monoxide.
