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7th Grade Review Test (03) Metrics, Scientific Notation, Scientific Method, Boron (2020) Flashcards | StudBud
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7th Grade Review Test (03) Metrics, Scientific Notation, Scientific Method, Boron (2020)
7th Grade Review Test (03) Metrics, Scientific Notation, Scientific Method, Boron (2020)
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1
What is a control (or constant)?
An educated guess
Something that changes in an experiment
Something tested and accepted as true
Something that stays the same in an experiment
2
Plasma has ...
Neither definite volume or shape
Charged streams of ionic gases
Definite shape and definite volume
Definite volume but indefinite shape
3
Can matter be created or destroyed?
Yes
No
4
Convert 7.85 daL to TL
0.00000785
785000000000
0.0000000000785
78500000
5
A liquid is
ionized gas that emits electrons
a state with definite shape and volume
a state with definite volume but not definite shape
a state with no definite shape or volume
6
Convert 90.62 Tm to Mm
906200
0.0009062
0.00009062
90620000
7
A gas is
a state with no definite shape or volume
a state with definite volume but not definite shape
a state with definite shape and volume
ionized gas that emits electrons
8
Which step of the scientific method involves rewriting your procedure to address its flaws?
Create Experiments
Modify Experiments
Perform Experiments
Analyze Data
9
Which step of the scientific method involves developing a way to test your hypothesis?
Identify the Problem or Question
Create Hypothesis
Modify Experiment
Create Experiments
10
Which step of the scientific method involves coming up with what you want to explain?
Review your information
Modify Experiment
Identify the Problem or Question
Communicate Results
11
Which step of the scientific method involves brainstorming with what you think will happen?
Create Hypothesis
Communicate Results
Identify the Problem or Question
Modify Experiment
12
Write in scientific notation: 0.000051580
5.158 x 104
5.158 x 105
5.158 x 10-4
5.158 x 10-5
13
What is matter?
The things that make up the earth.
Things that make up the universe
Anything that has mass and takes up space.
Solid, Liquid, and Gas
14
What is the symbol for Boron?
B
Br
Bn
Bo
15
Write in standard form: 6.24 x 10
-2
6240
0.0624
62400
0.00624
16
Which experiment was done with Boron?
it was liquified, put with cotton, and ignited
it was burned to make a green flame
it's electrical conductivity was demonstrated
a rubber tube was frozen and broken with it
17
What is a hypothesis?
A problem or question that starts an investigation
A process to find answers to questions
An educated guess
Information gathered during experiments
18
Is there only one version of the scientific method?
No, there are many ways
Yes, there's only one way
19
The Law of Conservation of Matter States...
That matter can only be created
That matter can only be destroyed
That matter is never created or destroyed
That chemical changes and physical changes are interrelated
20
Which step of the scientific method involves checking to see if your information is reliable?
Perform Experiments
Create Experiments
Analyze Data
Create Hypothesis
21
What is the atomic number of Boron?
7
5
6
8
22
Convert 64.36 m to pm
64360000000000
0.00000000006436
0.0000006436
6436000000
23
What is a law?
Something that stays the same in an experiment
Something that describes the way things work
Something tested and accepted as true
An educated guess
24
What is a natural occurrence for Boron?
In coal
As a gas with the strongest natural bond
In the ozone layer
Borax mines
25
Convert 6.23 kg to pg
6230000000
0.00000000000000623
6230000000000000
0.00000000623
26
A solid is
a state with definite shape and volume
a state with no definite shape or volume
a state with definite volume but not definite shape
ionized gas that emits electrons
27
Which step of the scientific method involves following steps in a procedure and recording observations?
Perform Experiments
Create Hypothesis
Identify the Problem or Question
Create Experiments
28
What is the scientific method?
An educated guess
A process to find answers to questions
Information gathered during experiments
A problem or question that starts an investigation
29
Kinetic Molecular Theory states that...
energy transfer is done via molecular conduction
plasma is only a hypothetical state of matter
all molecules are in constant motion
only moving particles can create or receive energy
30
What is a use for Boron?
to breathe
as a coolant
in plastics
as detergent
31
What is a dependent variable?
Something that stays the same in an experiment
Something tested and accepted as true
Something that changes as a result of what is tested
Something tested by the experimenter
32
What is an independent variable?
Something tested and accepted as true
Something that changes as a result of what is tested
Something that stays the same in an experiment
Something tested by the experimenter
33
Which Step? Write a conclusion that summarizes your work
Communicate Results
Review your information
Modify Experiment
Follow the steps of your procedure
34
What is a theory?
Something that stays the same in an experiment
An educated guess
Something that describes the way things work
Something tested and accepted as true
35
Write in scientific notation: 59880
5.988 x 10-1
5.988 x 10-4
5.988 x 101
5.988 x 104
36
Which best describes Boron's reactivity?
long innert chains of atoms
reactive in liquid form
very explosive
having properties of metals and non-metals
37
What is data?
Information gathered during experiments
A problem or question that starts an investigation
A process to find answers to questions
An educated guess
38
Write in standard form: 4.6527 x 10
8
0.0000000046527
0.000000046527
4652700000000
465270000
39
Convert 15.19 TL to pL
15190000000000000000000000
0.00000000000000001519
0.00000000000000000000001519
15190000000000000000
40
What is a variable?
Something that stays the same in an experiment
Something that changes in an experiment
Something tested and accepted as true
An educated guess
