bell work 11-13-14. bell work answer student learning objectives spi0807.9.3 classify common...

Bell Work 11-13-14

Bell Work Answer

Student Learning ObjectivesSPI0807.9.3 Classify common substances

as elements or compounds based on their symbols or formulas.

SPI0807.9.4 Differentiate between a mixture and a compound.

SPI0807.9.5 Describe the chemical make-up of the atmosphere.

TOC:#58. Elements & Compounds Foldable

Study Jams!Elements and Compounds!

http://studyjams.scholastic.com/studyjams/jams/science/matter/elements-and-compounds.htm

Elements & Compounds Foldable

Elements

Compounds

SPI 0807.9.3 Elements and Compounds

What Is An Element? a substance that CANNOT be broken down into a

simpler substance by CHEMICAL means. In other words…you CANNOT change one element into a

different element with a chemical reactionEach individual element is a unique particle called an atom So in other words… elements are the different types of

atoms

Example:Lithium is an element.Here is one lithium atom

3

LiLithium

6.9

More about Elements!• More About Elements: • Elements’ chemical symbols always start with one

capital letter• Can be followed by one or more lower case letters

Examples: • H = the element hydrogenrepresents one hydrogen atom• Na = the element sodiumrepresents one sodium atom• Uub=the element ununbiumrepresents one ununbium atom

Compounds• Compounds are pure substances composed of two or

more elements that have been chemically combined. • Each compound has a unique set of physical and chemical

properties that are different elements used to make the compounds.

• Elements must combine at specific mass ratios. • Compounds can be broken down using chemical needs. • Electrolysis- sends electric current through compounds. • Chemical forces- are forces caused by other compounds

or molecules that act on substances. • Examples:

– NaCl = (Table Salt) – CO2 = (Carbon dioxide) – C6H12O6 = (Glucose)

SODIUM AND CHLORINE

CARBON AND OXYGEN

CARBON, HYDROGEN, & OXYGEN

More About Compounds• Formulas for compounds will always contain more than one

capital letter.• This is how you can tell the difference between an element and a

compound… count the number of capital letters!

Examples: H2O • This is the compound called water

C12H22O11• This the compound called table sugar

CH3COOH This is the compound called vinegar

…is a compound for it has more than 1 capital letter



Is this an element or a compound?Write a capital E if you think it is an elementWrite a capital C if you think it is a compound

Cs(Cesium)

Why?...is a pure substance, consists of only one type of atomHow to tell?...It only has one capital letter!

Review Activity

Element


NaCl(Sodium Chloride)

Why?... has two atoms chemically bonded together How to tell?...It has more than one capital letter!

Review Activity

Compound


Fe(Iron)

Why?...is a pure substance, consists of only one type of atomHow to tell?...It only has one capital letter!

Review Activity

Element


MgCl2

(Magnesium Chloride)Why?... has two atoms chemically bonded together

How to tell?...It has more than one capital letter!

Review Activity

Compound

Exit TicketElements Compounds

Bell Work 11-14-14

Bell Work Answer

Student Learning ObjectivesSPI0807.9.3 Classify common substances as

elements or compounds based on their symbols or formulas.

SPI0807.9.4 Differentiate between a mixture and a compound.

SPI0807.9.5 Describe the chemical make-up of the atmosphere.

TOC:#59. Mixtures Notes #60. Element or Compounds?

Word Wall Quiz 11/14/141. ____a bond formed by the attraction between

positively charged metal ions and the electrons around the

2. ____the regular pattern in which a crystal is made3. ____the combining of atoms to form molecules or

ionic compounds4. ____a bond that forms when electrons are transferred

from one atom to another atom5. ____a bond formed when atoms share one or more

pairs of electrons

A. Covalent Bond B. Crystal Lattice C. Ionic Bond D. Chemical Bonding

E. Metallic Bond

Word Wall Quiz 11/14/141. ____a bond formed by the attraction between

positively charged metal ions and the electrons around the

2. ____the regular pattern in which a crystal is made3. ____the combining of atoms to form molecules or

ionic compounds4. ____a bond that forms when electrons are transferred

from one atom to another atom5. ____a bond formed when atoms share one or more

pairs of electrons

A. Covalent Bond B. Crystal Lattice C. Ionic Bond D. Chemical Bonding

E. Metallic Bond

E

B

D

C

A

Study Jams!

Mixtures

http://studyjams.scholastic.com/studyjams/jams/science/matter/mixtures.htm

What is a Mixture?When you combine two or more substances together, if no chemical

reaction occurs then it is called a mixtureNOTE: A mixture may contain 1 or more compounds, as long as they

do not react with each other (like Koolaid…see example below)

MIXTURE EXAMPLES:Koolaid…

Pizza…When you combine cheese, tomato sauce, and dough, these items do not chemically react with each other.

When you combine water (a compound) and Koolaid powder (sugar, flavoring, & coloring) these items do not chemically react with each other.

SPI 0807.9.4 Mixtures Notes

More About Mixtures: Any changes you observe in a mixture are only physical changes…no new substances are formed.Mixtures can be fairly easily separated back into the individual ingredients

More Mixture Examples: Red Bull …is merely a combination of water and other ingredientsAir…is merely a combination of nitrogen, oxygen, & other gasesSteel…is merely a combination of iron and carbon

SPI 0807.9.4 Mixtures or Compounds

No chemical reaction occurs



What Is A mixture? a combination of two or more substances that ARE NOT chemically combined No chemical reaction occurs!

Unlike a compound… …a mixture can be fairly easily taken back apartEXAMPLES: Soup, Soft drinks (Coke, Pepsi, etc.), Tea, Hamburgers,

Koolaid Drinks, pizza, etc

No precipitate is formedNo smoke No fizzing or foaming No explosion

No heat or light given off


No explosion No fizzing or foaming No precipitate is formed

Key Point About Mixtures Mixtures can be fairly easily taken back apart No chemical reaction occurs!

No smoke

More Mixture Examples: Soup, Soft drinks (Coke, Pepsi, etc.), Tea, Salads, Soil

(dirt), Perfume, Cologne, Bronze, etc

No precipitate is formed

No smoke

No fizzing or foaming No explosion

No heat or light given off


What Is a Compound? …is made up of atoms of two or more different elements

that are chemically bonded via a chemical reaction.

More Compound Examples:Water (Hydrogen Oxide)Battery Acid (Hydrogen Sulfate)Table Salt (Sodium Chloride) Table Sugar (Sucrose)Rust (Iron Oxide)Chalk (Calcium Carbonate)

SPI 0807.9.4 Mixtures or Compounds

Review Activity

Is this an element, compound, or mixture?Write a capital E if you think it is an elementWrite a capital C if you think it is a compoundWrite a capital M if you think it is a mixture

Ar (Argon)

Why?...is a pure substance, consists of only one type of atom

Element


Monster Energy Drink

Why…ingredients DO NOT chemically combine Ingredients: Water, sugar, coloring, and flavor

Review Activity

Mixture


C6H12O6

(Glucose)Why?...has 3 atoms chemically bonded together

Review Activity

Compound


Chicken Soup Why…ingredients DO NOT chemically combine

Ingredients: Water, chicken, vegetable, noodles, salt, etc.

Review Activity

Mixture


CO2

(Carbon Dioxide)Why?...has 2 atoms chemically bonded together

Review Activity

Compound


Uut

(Ununtrium)Why?...is a pure substance, consists of only one type of atom

Review Activity

Element

Elements or Compounds?

CW grade- Complete the Elements or Compounds handout for a grade. We will grade it at the beginning of class Monday. Make sure to use your Periodic Table!

Exit Ticket Elements Compounds

Mixtures

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