chapter 2 Flashcards
Is the use of evidence to construct testable explanations and predictions of natural phenomena, as well as the knowledge generated through this process.
Science
is a fact, occurrence, circumstance, or process that can be observed.
phenomenon
This process of putting scientific knowledge to practical use
applied science.
a controlled situation that allows a scientist or researcher to determine what causes a change to occur.
expirmement
The results of these types of food experiments are recipes. In the food industry,
Formulations
repeatable
Replica
a measure of the quantity of matter.
mass
the mass of 1 cubic centimeter
Gram
the mass of 1 liter of water at 4°C (39°F). One kg equals 1,000 g.
Kilogram
the measure of the force of gravity between two objects.
Weight
to adjust a measuring instrument to a standard. To calibrate an electronic balance, you measure a standard mass first.
Calibrate
the distance between two points. This measurement allows you to evaluate the size of objects.
Length
The standard unit of length in the metric system is the meter (m). One meter is equal to 39.37 inches
Meter
the amount of space occupied by an object.
Volume
The metric unit for measuring fluid volume
Liter
a deep, wide-mouthed container with a pouring lip used to hold substances during experiments.
Beaker
a fl at-bottomed, cone-shaped container used to mix and hold liquids.
Erlenmeyer flask
a tall container used to accurately measure the volume of liquids to the nearest milliliter.
Graduated cylinder
a graduated glass tube with a control valve at the bottom.
Buret
The narrower a container is, the more obvious this curve will be. The meniscus is caused by liquid clinging to the sides of a container.
Meniscus.
0.01 of the difference between the boiling and freezing points of water.
Celsius degree
a system of steps used to solve problems. Scientists throughout the world use this method.
scientific method
a possible or tentative solution to a problem. It is an educated guess based on available evidence.
Hypothesis
an established explanation that accounts for known facts or phenomena.
Theory
are theories that are widely accepted as explaining and predicting phenomena in the same way under the same circumstances.
Laws
a factor that is being changed.
Variable
the standard against which you measure all changes.
Control
Each change made in an experiment
Variation
measurable facts that are collected during an experiment.
Data
analyzes and applies data.
Conclusion
Foods and beverages supply vitamins, minerals, and other healthful substances with relatively few calories.
Nuntrient-dense
When the results of several individual studies are pooled to yield overall conclusions,
Meta-analysis.
- Be serious
- Put hair up
- Be cautsious around heated glass
- Protect eyes, skin, and clothing from chemicals and acids.
- Hot glass looks the same as cold Gas
- Mix chemical only when Instructed
- Dispose of Chemicals properly
- Plan time for lab cleanup
- Follow the Lab rules and expirments exactly
Lab Rules
