Scientific method/Chemistry

Question 1

Title

Answer 1

describe the experiment in 10 words or less. Effect of IV on DV

Question 2

Abstract

Answer 2

Brief summary of what the experiment included including the results and conclusions AND how it can relate to real lift

Question 3

Introduction

Answer 3

Shows your knowledge of the topic
Research from other related experiments used.
Show links of importance to society

Question 4

Hypothesis

Answer 4

Educated guess of what will happen. Do not use “i” or “think”. Basically different wording of aim…
If the independent variable…, then the dependent variable…

Question 5

Aim

Answer 5

What you are trying to find out.
To investigate…
To determibe…

Question 6

Materials

Answer 6

list format of everything needed- be specific

Question 7

Variables

Answer 7

Independent, dependent, control (min 5)

Question 8

Method

Answer 8

List all steps, be specific

Question 9

Diagram

Answer 9

simple but detail

Question 10

Results

Answer 10

clearly presented in a graph or table

Question 11

Conclusion

Answer 11

State the results- min and max values, any outliers.
Rephrase aim/hypothesis:
when the IV did this, the DV did this

Question 12

Discussion

Answer 12

State whether the results supported hypothesis, explain reason for results, say any other experiments that can follow through

Question 13

Evaluation

Answer 13

State ways experiment can be improved and comment on reliability/validity
Validity: at least 4 control variables to be altered
Reliability: repeat experiment for more results to decrease the effect of outliers

Question 14

Referances

Answer 14

ye

Question 15

Order of all in investigation

Answer 15

Title, abstract, introduction, aim, hypothesis, variables, materials, method, diagram, results/table, conclusion, discussion, evaluation, referances

Question 16

How to make experiment more valid

Answer 16

Valid = variables
test the right variables and keep all variables the same (controlling them)

Question 17

How to make an experiment more reliable

Answer 17

Increase the amount of tests to get a better average and reduce the effect of outliers

Question 18

5 ways to change reaction rate

Answer 18

temperature, surface area, catalyst, agitation, concentration of reactants

Question 19

Temperature

Answer 19

A higher temperature means the particles will move faster so are more likely to collide. They also have more energy so they will collide with more force resulting in more chance of a successful collision.

Question 20

Surface area

Answer 20

A higher surface area means more particles are exposed and available for collision. (Same proportion of collisions will be successful but greater rate of collisions means greater rate of successful collisions

Question 21

Agitation

Answer 21

As a reaction occurs, products may build up around the reactants so by agitation such as stirring, it allows more of the reactants to become exposed resulting in greater frequency of collisions.

Question 22

Concentration of reactants

Answer 22

Higher number of particles results in a higher number of collisions

Question 23

Catalyst

Answer 23

A substance that speeds up a reaction without getting used up. * provides and alternate pathway for the reaction to take place which reduces the amount of energy needed for a reaction to take place and makes it easier for reactants to bond together.
examples include nickel for the hydrogenation of palm oil and iron for manufacturing ammonia