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Chemistry FC
Chemistry FC
96
Chemistry
6th Grade
12/22/2011

Additional Chemistry Flashcards

 


 

Cards

Term

 

 

 List the particles of an atom and they're charge and where they can be found in an atom.

Definition

 

Proton: 1 positive charge; in nucleus

Neutron; no charge; in nucleus

Electron: 1 negative charge; circling around nucleus

Term

 

 

 

Atom

Definition

 

 

The smallest particle into which an element can be divided and still be the same substance.

Term

 

 

 

Electron

Definition

 

 

Negatively charged particles found in all atoms; electrons are involved in the formation of chemical bonds.

Term

 

 

 

Theory

Definition

 

 

An full explanation for a broad range of hypotheses and obsevations that have been supported by testing.

Term

 

 

 

Model

Definition

 

 

 

A representation of an object or system.

Term

 

 

 

Nucleus

Definition

 

 

The tiny, extremely dense, positively charged region in the center of an atom; made up of protons and neutrons.

Term

 

 

 

Electron Clouds

Definition

 

 

The regions inside an atom where electrons are likely to be found.

Term

 

 

 

Protons

Definition

 

 

The positively charged particles of the nucleus; the number of protons determines the identity of an element.

Term

 

 The number of protons in the nucleus is called the _______________,

and it is always a whole number

Definition

 

 

 

Atomic Number

Term

 

 

Atomic Mass Unit

(amu)

Definition

 

 

The SI unit used to express the masses of particles in an atom.

Term

 

 

 

Isotopes

Definition

 

 

Atoms that have the same number of protons but have different numbers of neutrons.

Term

 

 

The sum of the protons and neutrons in an atom and the average mass of the atom is called the ___________.

Definition

 

 

 

Atomic Mass or Atomic Weight

Term

 

 

 

The rounded atomic mass is the ____________.

Definition

 

 

 

Mass Number

Term

 

 

Ion

Definition

 

An element where the number of protons is not equal to the amount of electrons which gives the element a charge (+ or -) instead of being neutral.

Term

 

 

What is the charge of an atom that has 5 protons and 10 electrons? 

Definition

 

 

-5

Term

 

 

What is the charge of an atom that has 17 electrons and 28 protons?

Definition

 

 

+11

Term

 

 

Draw an example of Shorthand Notation.

Definition

 

 

(Check notes for this one)

 

 

Term

What are #1, #2, and #3 supposed to be? (for shorthand notation)

 

#1

            #2

#3

 

Definition

 

#1: Mass number

#2: Symbol of element

#3: Atomic number

Term

 

 

Draw an example of Shorthand Notation for an ion with a charge of +3. 

Definition

 

 

(check notes for this)

Term

 

 

Elements

Definition

 

Pure substances that cannot be seperated or broken down into simpler subsatances by physical or chemical means.

Term

 

 

Pure Substance

Definition

 

 

A substance in which there is only one type of particle.

Term

 

 

List the three main types of elements.

Definition

 

 

Metals, Nonmetals, and Metalloids

Term

 

 

Metals

Definition

Shiny.

Good conductors of thermal and electric energy.

Most are malleable and ductile.

Term

 

 

Metalloids

Definition

Have properties of both metals and nonmetals.

Semi-conductors.

Semi-ductile and semi-malleable.

Term

 

 

Nonmetals

Definition

Dull.

Poor conductors.

 Great insulators.

Brittle and weak.

 

Term

 

 

Mixture

Definition


Combination of two or more elements that are not chemically combined.

Can be seperated by physical means.

Term

 

 

Compound 

Definition

 

A pure substance made up of two or more elements that are chemically combined.

Can be seperated by chemical means.

Term

1. Mixtures can be ________ or _______.

 

2. The 3 types of mixtures are ________, ________, or ________.

Definition

1. Homogeneous; heterogeneous

 

2. Solutions; suspensions; colliods

Term

 

 

List at least 2 ways of seperating mixtures.

Definition

 

Distillation, Magnet, or Centrifuge

 

(as long as you have 2)

Term

 

 

Solution

Definition

 

A mixture that is homogeneous and is made up of a solute that has been dissolved in a solvent.

 

Term

 

 

Solute

Definition

 

 

The substance that is dissolved in a solution. 

Term

 

 

Solvent

Definition

 

 

The substance that dissolves the solute in a solution.

Term

 

 

Suspension

Definition

 

A mixture where the particles are dispersed throughout a liquid or gas but are large enough they settle out.

-solute does not dissolve in suspensions

Term

 

 

Colloid

 

Definition

 

A mixture where the particles are dispersed evenly throughout the substance but are too small and light to settle out.

Term

 

 

Concentration

Definition

Measures the amount of solute in the solvent 

-unit is Molarity (M)

-another unit is grams in a specific volume

Term

 

 

Unsaturated Solution

Definition

 

 

Solution where it can dissolve more solute.

Term

 

 

Saturated Solution

Definition

 

 

Solution where it can't dissolve more solute.

Term

 

 

Solubility

Definition

 

The amount of solute needed to make a solution completely saturated.

The ability to dissolve in another substance.

Term

 

 

List at least two ways to increase solubility.

Definition

 

 

Mixing the substance, heating the substance, or crushing the solute.

Term

 

 

Characterisic Property

Definition

 

A property special to a substance regardless of the amount of the substance. Helps you identify the element.

Term

 

 

Give one example of a characteristic property.

Definition

Density, boiling point, ductility, maleability, reactive with something (more in notes if there are other examples you wish to put).

 

(as long as you have one)

Term

Which is there more of in a solution?

A. Solute

B. None, they're equal in amount

C. Solvent

Definition

 

 

C. Solvent

Term

Which of these can be filtered?

A. Suspension

B. Colloid

C. Solution

D.Both A and B

E. Both B and C

F. Both A and C

Definition

 

 

D. Both A and B

Term

 

 

Volume

Definition

 

The amount of space a substance takes up.

Units: cm3 (CC) or liters (l)

Term

 

 

Mass

Definition

 

 

The amount of matter in an object.

Units: gram (g)

Term

 

 

Length

Definition

 

The distance between points.

Units: cm, m, in, km, ft, mm, mile, etc.

Term

 

 

Matter

Definition

 

 

Anything that has mass and volume.

All matter is made of atoms

Term

 

 

List the four states of matter.

Definition

 

 

Gas, Liquid, Solid, Plasma

Term

 

 

Solid

Definition

a state of matter in which matter has a definite shape and volume. The atoms are very attracted to eachother and stay together, so the atoms do not move out of place.

Units for volume: cubic units (like cm3) or mL and L. 

Term

 

 

Liquid

Definition
A state of matter in which matter takes the shape of container and has a definite volume but not a definite shape. The atoms are not attracted to eachother as much as the atoms in solids but still are attracted. The atoms can move past eachother freely.
Term

 

 

Plasma

Definition
A state of matter that does not have a definite shape or a definite volume and whose particles have broken apart. Composed of electrons and positively charged ions. Conducts electric current. Effected by electric feilds.
Term

 

 

Gas

Definition

 

 

A state of matter in which matter changes in both shape and volume.

Term

 

 

Pressure

Definition

 

 

The amount of force exerted on a given area. 

Term

 

 

Boyle's Law

Definition

 

 

A law that states that the volume of a gas increases as the pressure decreases.

Term

 

 

Charle's Law

Definition

 

 

A law that states that the volume of a gas increases as the temperature increases.

Term

 

 

Change of State

Definition

 

 

The conversion of a substance from one state of matter to another.

Term

 

 

Melting

Definition

 

 

The change of state from a solid to a liquid.

Term

 

 

Freezing

Definition

 

 

The change of state from a liquid to a solid.

Term

 

 

Vaporization

Definition

 

 

The change of state from a liquid to a gas.

Includes evaporization and boiling.

Term

 

 

Condensation

Definition

 

 

The change of state from a gas to a liquid.

Term

 

 

Sublimation 

Definition

 

 

The change of state from a solid directly into a gas.

Term

 

 

Exothermic Changes of States

Definition

 

 The changes of states where heat is leaving the substance, which is nessesary for the change of state to occur.

Term

 

 

Endothermic Changes of States 

Definition

 

 

The changes of states where heat is entering the substance, which is nessesary for the change of state to occur.

Term

 

 

What are the two properties of liquids?

Definition

 

 

Surface Tension and Viscosity

Term

 

 

Surface Tension

Definition

 

 

A force acting on liquid on surface. Cause spherical dot formation.

Term

 

 

Viscosity

Definition

 

 

Resistance of flow.

-thicker liquids are more viscous.

Term

 

 

Tempurature

Definition

 

The measure of how fast the molecules are moving.

-amount of energy, also caled heat.

Term

 

 

Boiling 

Definition

 

A type of vaporization that occurs at the substance's boiling point throughout the liquid.

Term

 

 

Evaporization

Definition

 

A type of vaporization that occurs below the boiling point only at the surface of the liquid.

Term

1. _________ effects boiling points.

 

2. The ________ you get the              (A.lower ;B.bigger) the boiling point gets.

Definition

 

1. Alttitude

 

2. Higher; bigger

Term

 

 

List the exothermic changes

Definition

 

 

Freezing, Condensation

Term

 

 

List the Endothermic changes.

Definition

 

 

Melting, Vaporization, Sublimation

Term

What are #1, #2, #3,and #4 supposed to be for an element on the table of elements?

 

#1

 

#2

 

#3

#4

Definition

#1: Atomic Number

#2: Element's Symbol

#3: Element's Name

#4: Atomic Mass or Atomic weight 

Term

 

 

Chemical Properties

Definition

 

A property of matter based on it's ability to change into a new substance with new properties.

Term

 

 

Physical Properties

Definition

 

A property of matter that can be observed without changing the identity of the substance. 

Term

 

 

Density

Definition

 

 

The amount of matter in a given space; mass per unit volume

Term


What is the equation for Density?
Definition

 

 

Density=mass÷volume

Term

 

 

Chemical Change

Definition
A change that occurs when two or more substances are changed into entirely new substances with new properties; cannot be reversed through physical means.
Term
Theory
Definition
Explanation backed up by experiments for a range of hypothesises and observations.
Term
Democritis
Definition

Introduced the idea of atoms, saying they were small, hard particles and that they were idivisible. He also said that all substances were made up of atoms. 

He also said that atoms came in different shapes.

Term
What word does the English word "atom" come from and what did that word mean?
Definition
It came from "atomos", meaning indivisible.
Term

What thing(s) did Democritis say that was incorrect?

A. Atoms are small, hard particles

B. Atoms come in different shapes

C. All substances are made up of atoms

D. Atoms are indivisible

E. None of the above

Definition
B. and D.
Term

1. Who opposed (went against, hated) Democritis and his ideas?

 

2. Which of the two won people's respect?

Definition

1. Aristotle

 

2. Aristotle

Term
List Dalton's Atomic Theory
Definition

1) All substances are made of atoms, and atoms are small particles that cannot be divided, created, or destroyed.

2) Atoms of the same element are exactly alike, and atoms of different elements are different.

3) Atoms join with other atoms to make new substances.

 

Term
Democritis had his theory in _______.
Definition
440 B.C.E
Term
Dalton had his theory in _______.
Definition
1803
Term
JJ Thomson
Definition
Discovered negative particles which we now call electrons. Also discovered that there was positive material in an atom because something had to balance the negative particles. 
Term
JJ Tompson conducted a ___________ experiment.
Definition
Cathode Ray Tube 
Term
JJ Tompson made the ____________ model.
Definition
Plum Pudding
Term
What did JJ Thomson call the negatively charged particles in an atom?
Definition
He called them corpusles.
Term
Rutherford 
Definition
Discovered protons are densely packed in the center of an atom. He also discovered that the atom is alot of epty space with electrons on the outside of the nucleus. 
Term

UtrEfDrHo conducted the __________ experiment.

 

 

Definition
Rutherford conducted the Gold Foil expirement
Term
Bohr 
Definition
Said that electrons had defined paths that they traveled on. He said they would jump from path to path.
Term

Which part of Rutherford's discoveries was wrong?

A. None of the below

B. Protons are densly packed in the center of the atom.

C. The atom is alot of empty space with electrons on the outside of the nucleus

Definition
A. None of the below
Term
The modern day theory was made by whom?
Definition
Schroedinger and Heisenberg
Term
The modern day theory.
Definition
Says that electrons can be found in electron clouds
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