7th 2.1 Vocab
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Last updated over 2 years ago
23 questions
2
activation energy: the minimum amount of energy required to initiate a _______ ; written as Ea and measured in _______
2
The letter "a" represents _______ and "b" represents _______.
1
chemical bond: the _______ that hold atoms together
3
The three main types of chemical bonds exist are
The three main types of chemical bonds exist are
2
Select all of the scenarios that describe a chemical change:
Select all of the scenarios that describe a chemical change:
3
chemical property: a characteristic of a substance that is measurable or _______ during a chemical reaction; includes _______ , heat of combustion, _______ , etc.
1
law of conservation of mass: a fundamental principle of science stating that mass cannot be _______ in a closed system through ordinary chemical or physical means
3
Select all of the scenarios that describe a physical change
Select all of the scenarios that describe a physical change
2
physical property: a characteristic that can be _______ (intensive) or _______ (extensive) that is used to describe matter and can be observed or measured without changing its composition
4
Sort the physical properties as intensive or extensive.
Sort the physical properties as intensive or extensive.
- texture
- odor
- density
- volume
- mass
- length
- melting point
- color
- Intensive Properties
- Extensive Properties
2
precipitate: solid _______ that have been separated from a _______
3
Select the indicators of a chemical change:
Select the indicators of a chemical change:
2
product: the _______ that are formed during a _______ reaction
2
reactant: the _______ present before a _______ occurs
3
In the diagram above, "a" represents a _______, "b" represents a _______, and "c" represents the _______.
3
solute: a substance that has the ability to be _______ by a _______ to create a _______
1
Sea water is salty because it has dissolved salts. Salt is the _______ in sea water.
2
When water and sugar are mixed together, the sugar dissolves into the water. The _______ in this case would be the solvent, and the _______ (the substance being dissolved) would be the solute.
1
solution: a _______ in which a solid and a liquid or two liquids are mixed so evenly, that it is not possible to see the separate particles
2
The ocean is a solution of _______ and other _______ in water.
1
solvent: the substance that _______ another substance
1
_______ is the universal solvent.
1
Sugar dissolves when mixed with water. _______ is the solvent.