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Sience
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24
Science
6th Grade
02/28/2010

Additional Science Flashcards

 


 

Cards

Term

 Physical properties of matter

 

Definition

Physical properties of matter is anything

 That has mass also anything that takes up space.

Also all matter is made up of composed elements

 

Term

Physical changes of matter

Definition

The physical change of matter include freezing, boiling,

 Evaporation ext. The physical changes change the way

The matters substance is.

Term

 

Chemical properties of matter

Definition

The chemical properties of matter

Include the changing of the nature of

Any matter. Also if a new substance is or was formed           

Term

Chemical changes of matter

 

Definition

The chemical changing of matter include making

A new substance like the cooking of an egg or

Burning of something.

Term

Chemical reactions

Definition

Is the process in which substances undergo

Chemical changes that end up in the substance

Of some type of new matter.

Term

 

Reactants

 

Definition

A reactant is some element that is

In the process before the chemical

Reaction happens.

Term

 

Product

 

Definition

A product is the substance

That is formed at the end of

 a chemical reaction

 

Term

Precipitate

 

Definition

Precipitate is a solid that

That forms from a solution

Of a chemical reaction.

 

Term

Exothermic reaction

 

Definition

An exothermic reaction

Is a reaction that gives off

Energy in the form of heat.

 

 

Term

Endothermic reaction

 

Definition

Endothermic reaction is the

 Reaction that absorbs energy

In the form of heat. 

 

Term

Conservation of mass

 

Definition

 

Conservation of mass is a principal

Stating that matter has not formed

Or was destroyed in chemical reaction.

 

Term

Open system

 

Definition

Open system is when any matter

Can slip through to escape or go

Out of its surroundings.

 

Term

 

Closed system 

 

Definition

Closed system is when

No matter can escape or

Slip in out of any of its surroundings.

 

Term

Coefficient

Definition

A coefficient is the number

That comes before a formula

And indicate how many of

Each atoms is in the reactants and

The products.

Term

 

Synthesis 

Definition

Synthesis is a chemical reaction

When two simple substances

Combine and make a more

Complex molecule.

Term

 

Decomposition

 

Definition

 

Decomposition is when two or more 

Molecules brake down and form

Into more simpler molecules.

Term

Replacement 

Definition

Replacement is when an element

Or a group of elements replaces

Another compound or when two

Different elements replace each other

Term

Activation energy 

Definition

Activation energy is the energy

Needed to start reaction.

Exothermic and endothermic use

Activation energy to get started.

 

Term

 

 

Catalyst

Definition

Catalysts are materials that increase

The speed of chemical reactions by

Lowering the activation energy.

 

Term

 

Enzyme 

Definition

An enzyme is the same thing

As a catalyst but only enzymes

Are only used in a cell.

Term

Inhibiter   

Definition

 

 An inhibiter is material that reduce the

Reality of a chemical reaction, this happens

By shielding of the reactants from forming together

 

 

Term

Concentration

Definition

 Concentration increases the rate of

chemical reaction, By blocking off

 any thing that could get in to

start a chemical Reaction.

 

Term

Combustion 

Definition

Combustion is a rapid

Reaction between fuel and

Oxygen that results in fire.

 

Term

 

Fuel

Definition

Fuel is a material that

When releases energy it

Burns. Fuel is also in the

Fire triangle along with

oxygen and carbon.

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