Flashcards in Vocab Deck (25)
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a systematic approach to research
Scientific Method
1
a tentative explanation for a set of observations
Hypothesis
2
a concise statement of a relationship between phenomena that is always the same under the same conditions.
Law
3
a unifying principle that explains a body of facts and/or those laws that are based on them
theory
4
anything occupying space and having mass
matter
5
three states of matter
solid liquid gas
6
change in the form of a substance, not in its chemical composition
physical change
7
a given substance becomes a new substance or substances with different properties and different composition
chemical change
8
____ have variable composition
mixtures
9
having visibly indistinguishable parts; solution
homogeneous mixture
10
having visibly distinguishable parts
heterogeneous mixture
11
a quantitative observations consisting of two parts: number and scale/unit
measurement
12
a digit that must be estimated is called _______
uncertain
13
1.234 has ______ sig figs
4
14
606 has ______ sig figs
3
15
0.08 has ______ sig figs
1
16
2.0 has ______ sig figs
2
17
.0.00420 has ______ sig figs
3
18
The answer to 4.51x3.7777 will have _____ sig figs
3
19
The answer to 6.8/112.04 will have ______ sig figs
2
20
89.332+1.1 will have how many numbers to the right of the decimal
1
21
3.70-2.9133 will have how many numbers to the right of the decimal
2
22
temperature: K=
C+273.15
23
temperature: F=
C*(9/5)+32
24
