Quimica

Universidad Autónoma de Nuevo León
Preparatoria 7 Las Puentes

Invstigation report

“Laboratorio de Ciencias Experimentales”
Ana Cecilia Szymanski López #35
José Roberto Torres de Lira #36Lucia Alejandra Treviño González #37
Rebecca Villarreal Gutiérrez #40

San Nicolás de los Garza, Nuevo León at 20 of February 2013.
Introduction
In this theme of the course of Laboratory we learnabout the measures, like how to take them, how to take the measure of an object, we realize some practices in the laboratory and also we take some measures of the things found in our surrounding.Also we learn how to take note or write what we were measuring so we don’t have any trouble at the time of being reading the measures we take. We take in count the importance of write the expressions ofa measure in a correct way.
With the help and support of our teacher we learn which are the instruments of the laboratory and which is their use and how to use them.
We also determine with whichobjects you can take out certain measurements and for what they will be useful for you.

Data
* Length measures
Measured object | Measure (m) | Measure (cm) |
Length of a block | 100m |10,000cm |
Length of 10 blocks | 1000m | 100,000cm |
Front of a house | 6m | 600cm |
Length of a table | 1.20m | 120cm |
Length of a lap top | 0.34m | 34cm |
Diagonal of a tv | 0.60m | 60cm |Length of a hand | 0.17m | 17cm |
Length of a $100 billet | 0.134m | 13.4cm |
Length of a $1 coin | 0.02m | 2cm |

* Time measures
How much time take | Measure in seconds |
Walk the lengthof a block | 240s |
Walk the length of 10 blocks | 2,400s |
Walk from the principal entrance to the classroom | 300s |
Walk from the door of the classroom to my chair | 60s |
A ball fallingfrom a height of 4 meters | 6s |
A ball falling from a height of 2 meters | 4s |
A ball falling from a height of 1 meter | 2s |

* Lab measures
Objects/ samples | Weight (grams) | Weight...