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Praxis ICA

Assessment

QuestionAnswer
What is chemical change Chemical changes take place on the molecular level. A chemical change produces a new substance. Examples of chemical changes include combustion (burning), cooking an egg, rusting of an iron pan, and mixing hydrochloric acid and sodium hydroxide to make sa
What is chemical change Physical changes are concerned with energy and states of matter. A physical change does not produce a new substance. Changes in state or phase (melting, freezing, vaporization, condensation, sublimation) are physical changes. Examples of physical changes
How to Tell Chemical & Physical Changes Apart A chemical change makes a substance that wasn't there before. There may be clues that a chemical reaction took place, such as light, heat, color change, gas production, odor, or sound. The starting and ending materials of a physical change are the same, e
Dissolving salt in water is an example of which type of change? chemical
When a nuclear change takes place, which is true: Energy is released
Which type of radiation is unaffected by magnetism gamma
A chemical used to determine whether a substance is an acid or a base is called: indicator
Which state of matter undergoes the same amount of expansion for a given increase in temperature gas
Which temperature scale is an absolute scale, where the zero point is the lowest possible temperature Kelvin
The formation of water from oxygen and hydrogen is an example of a: chemical change
The emission of an alpha particle during the decay of Uranium 238 is an example of a: nuclear change
Beta emission during the decay of carbon 14 is an example of nuclear change
define solids •A solid has a definite shape and volume
ice (solid water), a bar of steel, and dry ice (solid carbon dioxide). are examples of solids
define liquids •A liquid has a definite volume, but takes the shape of its container
•Examples of liquids include water and oil. water and oil.
what are gases •A gas has neither a definite volume nor a definite shape.
what are some gases air, oxygen, and helium
Created by: Nesy
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