Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
Chemistry |
The study of matter and the changes matter undergoes |
|
|
Why is chemistry a central science? |
Chemistry is at the core of all other sciences & without it we would experience primitive-like conditions |
|
|
When did the study of chemistry begin? |
In the 19th century & it advanced with technology in the 20th century |
|
|
Macroscopic world |
what we see, touch, and measure directly |
|
|
Microscopic world |
what we see via modern technology |
|
|
How do chemists make observations and come up with explanations about phenomena? |
data comes from large phenomena and explanations come from microscopic atoms and particles (see in the macro world and think in the micro world) |
|
|
Scientific method |
a systematic approach to research used in all sciences |
|
|
List the steps on the scientific method |
(1) Observe: define a problem (2) Representation: perform experiments, make observations, and record data via symbols and chemical equations (3) Interpretation: explain the observations via a hypothesis & retest to ensure validity |
|
|
Hypothesis |
a possible explanation for a set of observations |
|
|
Qualitative data |
general observations about systems |
|
|
Quantitative data |
comprising numbers determined through measuring the system |
|
|
Law |
a concise statement of a relationship between phenomena that is always the same under the same conditions |
|
|
Theory |
a unifying principle that explains a body of facts and/or those laws based around them |
