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Kiewit Middle Rxns

Kiewit Middle "chemical reactions"

QuestionAnswer
The best way to determine if a chemical reaction occurred is to look for: a new substance with different properties
Leaves changing color in the fall is an example of a: chemical change/reaction
How many atoms of each type are in a molecule of glucose, C6H1206 Carbon=6 Hydrogen=12 Oxygen=6
Why isn't "change of state" an example of a chemical reaction? It doesn't lead to a new substance forming. For example, when water melts from ice to a liquid, it's still water.
What forces hold two or more atoms together. chemical bonds
What are the three steps that occur during a chemical reaction? 1. bonds break 2. atoms rearrange 3. bonds reform
For an ionic compound to be happy, what charge would it have? zero
In the following reaction, identify the reactants. N + O2 ----> NO2 N and O2
What do we call the compound on the right side of the following equation? N + O2 ---> NO2 product
What states that during a chemical reaction mass is neither created nor destroyed. Law of Conservation of Mass
During what kind of reaction will a more reactive atom replace a less reactive one? single-displacement reaction
What do we call an atom that has either gained or lost an electron? an ion
The law of conservation of energy states that: energy is neither created nor destroyed during a chemical reaction
True or false: a burning match is a chemical reaction. True
True or false: milk spoiling is a chemical reaction. True
True or false: ice melting is a chemical reaction. False
True or false: digesting food is a chemical reaction. True
A diatomic molecule is one that is made up of... two of the same type of element.
Examples of diatomic molecules would be..... O2 and N2
The name for the compound, N2O3 is...... dinitrogen trioxide
An exothermic reaction should have what in the product? energy in the form of heat
Ture or false: in a chemical reaction, atoms are never lost or gained, only rearranged. True
What type of chemical reaction absorbs heat? endothermic
In what kind of reaction does a single compound break down into two or more substances? decomposition reaction
In what kind of reaction do two or more reactants form a single product? synthesis reaction
In what kind of reaction do elements in two different reactants swap places? double-displacement reaction
Balance the following equation and identify the type it is: O2 + H2 --> H2O O2 + 2H2 --> 2H2O synthesis
Balance the following equation and identify the type it is: NaCl --> Na + Cl2 2NaCl --> 2Na + Cl2 decomposition
Balance the following equation and identify the type it is: Cu + AgCl --> Ag + CuCl2 Cu + 2AgCl --> 2Ag + CuCl2 single-displacement
Balance the following equation and identify the type it is: FeCl2 + K2S --> FeS + KCl FeCl2 + K2S --> FeS + 2KCl double-displacement
The coefficient of a compound is found..... at the front of the compound as in 2NaCl.
The subscript of an element is found...... Below and to the right of the element as in H20.
Created by: Mr. Kucera
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