Progress Test Flashcards

(39 cards)

0
Q

How do scientific investigations begin?

A

Curiosity or a problem

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1
Q

What are the steps of the scientific method? 6

A

Purpose, research, hypothesis, experiment, analysis, and conclusion

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2
Q

What do you have to do if your experiment proves your hypothesis wrong?

A

State a new hypothesis and do a new experiment

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3
Q

Describe the step of purpose

A

State a problem

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4
Q

Describe research

A

Find out about the topic

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5
Q

Describe hypothesis

A

Predict the outcome to the problem

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6
Q

Describe experiment

A

Develop a procedure to rest your hypothesis

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7
Q

Describe analysis

A

Record results of the experiment

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8
Q

Conclusion

A

Compare the hypothesis to the experiments conclusion

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9
Q

What do you use to make observations?

A

The 5 senses

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10
Q

What is an inference?

A

Making an educated guess based on what you currently see

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11
Q

Describe the molecules of water in the solid phase?- ice

A

They are arranged in a random pattern

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12
Q

In which state of matter are the molecules farthest apart from each other?

A

Gas

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13
Q

In which phase are particles generally the closest?

A

Solid

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14
Q

In which state are the molecules moving around the fastest?

A

Gas

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15
Q

Which line is the independent variable on a graph?

A

The bottom line

16
Q

Which line is the dependent variable on a graph?

A

The line on the side of the graph

17
Q

As the independent variable increases the dependent variable…

18
Q

How is a neutron charged?

A

A neutron has a neutral charge

19
Q

What charge does a election have?

A

An electron has a negative charge

20
Q

What charge does a proton have?

A

A proton has a positive charge

21
Q

Where are neutrons found?

A

Found in the nucleus of an atom

22
Q

Where are electrons found?

A

Found in the space outside the nucleus of an atom

23
Q

Where are protons found?

A

Found in the nucleus of an atom

24
How do you use an overflow container?
Subtract your new volume from the starting volume
25
How do you calculate density?
Mass ------- Volume
26
How do you calculate volume?
Mass ------- Density
27
How do you calculate mass?
Density x volume
28
How do you know if a physical change has taken place?
The substance still has the same properties
29
What is an ex of a physical change?
A piece of paper being cut
30
How do you know if a chemical change has taken place?
The substance has changed into something new
31
What is an ex of a chemical change?
Burning a piece of paper
32
Where is the atomic mass located?
The number under the symbol
33
Where is the atomic number located?
The number above the symbol
34
What is the atomic mass?
The number of protons and neutrons
35
What is the atomic number?
The number of protons
36
How can you tell whether it is a base or an acid based on pH value?
Anything more than seven is a base and anything less than seven is an acid. 7 is a neutral.
37
What are some characteristics of an acid?
* H+ * sour taste * reactivity with metals * ability to produce color changes in indicators
38
What are some characteristics of bases?
* OH- * bitter taste * slippery feel * ability to produce color changes in indicators