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Chemical reaction
Na
23
Science
4th Grade
02/29/2012

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Cards

Term
What is a solution?
Definition
When two separate molecules become one
Term
Where can a solution be found?
Definition
Solution can be found In sugar water
Term
Whatbare parts of a solution?
Definition
The salutes and the solvents
Term
Characteristics of acid and bases and salt?
Definition
Acid-tastes sour and reacts strongly with metals
Bases- has a bitter taste and doesn't react with metals
Salts- can be bitter or tasteless and doesnt react with metals
Term
What makes makes a substance and acid?a Base? a salt?
Definition
Salt- sodium and chloride. Acid- when you add it to water. Base- when you remove it from water
Term
What is a neutralization reaction?
Definition
When you mix together an acid and Alkali.
Term
When does a chemical reaction take place?
Definition
By changing color, hardness or smell.
Term
What are the four signs of a chemical reaction?
Definition
Color change, formation of gas,bubbles form, and tempature change.
Term
Parts of a chemical reaction.
Definition
Reactants, yield sign, products, and coefficients.
Term
How is energy exchanged during a chemical reaction?
Definition
Energy can either be absorbed or released.
Term
What factors affect the rate of change?
Definition
Temperature, pressure, physical state, and catalyst.
Term
Recognize the basic characteristics of ionic and covalent bonds?
Definition
Ionic- high melting points, conducting electricity, dissolves in water, well defined crystals
Covalent- neutral, don't conduct electricity, low melting point
Term
What is an ionic bond?
Definition
It is an chemical bond in which one atom gives up an electron to another.
Term
What is a covalent bond?
Definition
It the sharing of pairs of electrons between atoms
Term
What happens to elections during the bonding process?
Definition
Valence electrons are shared between two bonds
Term
Heterogeneous
Definition
The mixture it different throughout the process
Term
Homogeneous
Definition
The mixture is the same through out the process
Term
Chemical reaction
Definition
Process that produces chemical change the results in a new product
Term
[image]
Definition
Short hand form of writing what reactants are used and what the products formed.
Term
Catalyst
Definition
A substance that speeds up a chemical reaction but isn't permanently changed
Term
[image]
Definition
Force that holds to atoms together
Term
Reactant
Definition
Substance that exists before a chemical reaction begins
Term
Product
Definition
Is the end result, what the turn out was
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