Chem Unit 2 Test
問題一覧
1
Depends on the amount of matter in a sample like volume
2
Depends on type of matter in a sample like hardness
3
Solid- definite shape and volume, particles packed, fixed positions, least amount of energy Liquid- definite volume but not shape, particles in flow, more energy than solids gas- no definite shape or volume, particles expand, highest amount of energy,
4
Irreversible- Break and Split Reversible- Melting and Freezing
5
Some properties of a material change but the composition does not
6
Homo- Composition is uniform throughout Hetero- Composition is NOT uniform throughout
7
Homo- Air, Salt Water, Vinegar, Coffee Hetero- Sand, Oil, Chicken Noodle Soup, Pizza
8
Differences in Physical Properties
9
Filtration- Separates solid from liquid Distillation- Seperates water from different materials
10
Simpliest form of matter with a unique set of properties examples- carbon, hydrogen, oxygen, sodium, iron
11
Elements cant be broken down and Compounds can easily be seperated
12
Water, Carbon, Table Salt, Baking Powder, Soap
13
Mixture- comp of material is fixed Substance- comp of material varies
14
They provide a way to write chemical formulas
15
First letter is capitalized and the 2nd isn’t
16
the relative proportions of the elements
17
The compound has a fixed position
18
when the comp of matter changes
19
reactants and products
20
Products- substances at the start reactants- results of the chemical change
21
in any physical or chemical change, mass is conserved
22
a solid formed from different liquids combine
問題一覧
1
Depends on the amount of matter in a sample like volume
2
Depends on type of matter in a sample like hardness
3
Solid- definite shape and volume, particles packed, fixed positions, least amount of energy Liquid- definite volume but not shape, particles in flow, more energy than solids gas- no definite shape or volume, particles expand, highest amount of energy,
4
Irreversible- Break and Split Reversible- Melting and Freezing
5
Some properties of a material change but the composition does not
6
Homo- Composition is uniform throughout Hetero- Composition is NOT uniform throughout
7
Homo- Air, Salt Water, Vinegar, Coffee Hetero- Sand, Oil, Chicken Noodle Soup, Pizza
8
Differences in Physical Properties
9
Filtration- Separates solid from liquid Distillation- Seperates water from different materials
10
Simpliest form of matter with a unique set of properties examples- carbon, hydrogen, oxygen, sodium, iron
11
Elements cant be broken down and Compounds can easily be seperated
12
Water, Carbon, Table Salt, Baking Powder, Soap
13
Mixture- comp of material is fixed Substance- comp of material varies
14
They provide a way to write chemical formulas
15
First letter is capitalized and the 2nd isn’t
16
the relative proportions of the elements
17
The compound has a fixed position
18
when the comp of matter changes
19
reactants and products
20
Products- substances at the start reactants- results of the chemical change
21
in any physical or chemical change, mass is conserved
22
a solid formed from different liquids combine