OBJECTIVESChem10 IC24

I can identify chemical and physical changes based on chemical equations.

I can identify chemical and physical changes based on particle diagrams.

Puedo identificar cambios químicos y físicos basados en las ecuaciones químicas.

Puedo identificar cambios químicos y físicos basados en diagramas de partículas.

DO NOW

Summarize the difference between a chemical and a physical property

Resumir la diferencia entre un producto químico y una propiedad física

Do Now/Objectives Mix of LectureGuided PracticeIndependent PracticeWrap-up

AGENDA

Observe Now: Yummy Candy

Physical properties of

sugar (azucar)

Observations during heating

observaciones durante el

calentamiento

Physical properties of

Candy (caramelo)

- white

Put this table in your notes!!! Ponga esta tabla en sus notas!

What actually happened?lo que realmente ocurrió• C12H22O11(s) C12H22O11(l)= yummy!

– What kind of change?– Physical/fisica

• C12H22O11(s) 12 C(s) + 11 H2O(l) = really nasty!– What kind of change?– Chemical/quimica

• H2O(l) H2O(g)– What kind of change?– Physical/fisica

Physical vs. chemical CHANGESPHYSICAL CHANGE

CHEMICAL CHANGE

A change which alters a substance without changing its composition (what it is made of).

Un cambio que altera una sustancia sin cambiar su composición (lo que está hecho de).

A change that causes the creation of new substances.

Un cambio que provoca la creación de nuevas sustancias.

Physical Changes Cambios Fisicas

Chemical Notation

(s) (l) (g)(s) (aq)

Examples Ejemplos:

Phase Changes: H2O (l) H2O (g)Physical breaking: tearing aluminum foilDissolving or mixing: NaCl (s) NaCl (aq)

Key WordsPalabras Importantes:

Evaporation, condensation, boiling, melting, cutting, tearing, dissolving, mixing,

Aq = aqueous • Something dissolves in water

• Examples: Kool-Aid; Lemonade

• Aqueous solutions are HOMOGENEOUS MIXTURES

Chemical Changes Cambios Quimica

Chemical Notation

A chemical reaction:--You start with certain substances; you finish with different substances--The atoms are rearranged; no new elements have been created.

ExamplesEjemplos:

C6H12O6 (s) + 6O2(g) 6CO2(g) + 6H2O(l)

4Al(s) + 3Cu(SO4)2 3Cu(s) + 2Al2(SO4)3

Key Words:

Burning, combusting, replacing, reacting,

In your notes make this table En sus notas hacen de esta tabla

Physical Change Chemical Change

Chemical or Physical Change?

Química o un cambio físico?

Chemical or Physical Change?

Química o un cambio físico?

Chemical or Physical Change?

Química o un cambio físico?

Chemical or Physical Change?

Química o un cambio físico?

Chemical or Physical Change?

Química o un cambio físico?

Chemical or Physical Change?

Química o un cambio físico?

Chemical or Physical Change?

Química o un cambio físico?

Density: The Illusion of BlingLab due Monday, September 17, 2012

Follow the rubric to complete the lab write up IN YOUR LAB NOTEBOOK

Questions?

Quote of the day:• “Men love to wonder, and that is the seed of

science.”

Ralph Waldo Emerson • Thoughts?