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47 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are the 6 steps of a formal lab? |
1) Purpose, 2) hypothesis, 3) procedure, 4) table/graph, 5) conclusion, 6) discussion |
Purpose, hypothesis |
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What are the 3 parts of a discussion during a formal lab? |
Paragraph 1- Re-state relationship established (not hypothesis, Paragraph 2- explain the science behind it, Paragraph 3- one significant error that occurred and how it effected the outcome of the lab |
Paragraph 1- Re-state relationship established |
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When do you use a bar graph? |
When you have numerical values associated with categories of places or things |
When you have numerical ... |
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When do use a histogram? |
When you need to show a continuous quantity (no space between the bars) |
Continuous ... |
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Pie charts are ... |
A good way to communicate categories in terms of percentages of a whole |
Percentages of a whole |
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What is a Line graph |
Shows the relationship between time and distance |
Time and distance .. |
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Scatter plots: |
Show how much one variable in affected by another |
Show how much... |
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Accuracy |
Nearness of a measurement to its true value |
Nearness ... |
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Precision |
Indicator of how scattered the data is, the less scattered, the higher the precision |
Indicator of... |
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Independent variable |
A variable that is changed by the investigator (on the x-axis) |
Changed by... |
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Dependent variable |
A variable that changes in response to the change in the independent variable (on the y-axis) |
Changes in response... |
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Control variable |
Variables that are kept the same (constant) |
Constant |
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Inference |
A guess/assumption |
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Observation |
Using your 5 Senses to learn about something |
5 senses |
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Quantitative |
Anything you can measure with a number (temp, height, length/distances) |
Quantity |
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Qualitative |
Anything you can't measure with a number (colour, shape, material, smell) state of matter (solid, liquid, gas) |
Quality |
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Control experiment |
The baseline for the experiment you're doing (first trial) |
First try |
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How to tell if it's a scientific article: |
Source: -who wrote it, is it biased, do you trust, is it reputable? Methodology - is there a detailed description of how the study was done (ex. # of test subjects, lab set up, questions asked) |
Source, methodology |
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Slope |
M2 - M1 = M (average density) V2 - V1 V |
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What is Density |
Mass per unit volume (the more dense, he more mass conspired to volume) |
Mass per ... |
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How to calculate density |
d= m/v |
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How to calculate mass |
m= d x v |
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How to calculate volume |
v= m/d (in ml, but cm3 when talking about solids) |
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How to calculate current |
I = Q/ ^t (flow rate of an electrical current |
I = current measured in amps - a |
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How to calculate charge |
Q = I x ^t |
Q = charge measured in coulombs - c |
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How to calculate time |
^t= Q/I |
^t = time measured in seconds - s |
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How to calculate voltage |
V = E/Q |
V = voltage measured in volts - v |
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How to calculate energy |
E = V x Q |
E = energy measured in joules - j |
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How to calculate current |
Q = E/V |
Q = acurrent which is measured in coulombs - c |
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Scientific method |
The general types of mental and physical activities that scientists use to create, refine, extend, and apply knowledge |
How scientists create and preform experiments |
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Steps of the scientific method |
1) Observe 2) identify problem 3) gather information 4) form a hypothesis 5) preform experiment 6) analyze data 7) draw conclusion 8) hypothesis not supported/ is supported 9) revise hypothesis/ repeat several times 10) *eventually* communicate results |
1) observe 2) identify problem 3) gather information |
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HHPS |
Hazardous Household Products Symbols |
Consumer products |
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WHIMIS |
Workplace Hazardous Materials Information System |
Labs |
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MSDS |
Material Safety Data Sheet |
Specifics details about a chemical |
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5 parts of the particle theory |
1) particles are in a random constant motion 2) all matter is made up of tiny particles that have empty spaces between them 3) different substances are made up of different kinds of particles 4) partials move faster as the temperature increases 5)particles attract each other |
Particles attract each other |
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Particle theory of matter |
A theory that describes the composition and behaviour of matter |
Behaviour |
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Pure substance |
A substance that is made up of only one kind of particle |
One kind |
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Mixture |
A substance that is made up of at least two different types of particles |
At least 2... |
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Mechanical mixture |
A mixture in which you can distinguish between different types of matter |
Soup |
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Solution |
A uniform mixture of 2 or more substances |
Uniform |
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Element |
A pure substance that cannot be broken down into a simpler chemical substance by any physical/chemical means |
A pure substance |
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Compound |
A pure substance composed of 2 or more different elements that are chemically joined |
Chemically joined |
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Heterogeneous mixtures |
Made of different substances that remain physically separate |
Mechanical mixture |
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Homogenous mixture |
Had the same uniform appearance and composition throughout |
Solution |
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Physical properties |
A characteristic or description of a substance that may help you identify it |
Colour, clarity, lustre, hardness, brittleness, texture, malleability, ductility, odour, taste |
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Physical properties of matter |
1) Melting point 2) boiling point 3) solubility 4) viscosity 5) density 6) conductivity |
1) melting point 2) conductivity |
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Chemical property |
A characteristic of substance that is determined when the composition of the substance is charged and one or more new substance |
A characteristic of a substance .... |
