Colorimeter - Study guides, Revision notes & Summaries

This is the BTEC Applied Science Unit 2 Assignment : Undertake titration and colorimetry to determine the concentration of solutions, which was awarded a distinction . This is an example of a assignment which was awarded Distinction level, you may use it as a guide to help you achieve a distinction. Good Luck.

BTEC Level 3 Applied Science Unit 2- Practical Scientific Procedures and Techniques Learning Aim A: Undertake titration and colorimetry to determine the concentration of solutions

AQA A-level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023 (VERIFIED) (There are) stretch-mediated sodium ion channels (in the membrane); 2. (Increased pressure) deforms/changes (sensory neurone/axon) membrane/lamella(e) OR (Increased pressure) deforms/changes sodium ion channels; 3. Sodium ion channels open; 4. Sodium ions diffuse in; 5. Depolarisation (leading to generator potential); 3 max (3 x AO1) 1. 2. 3. or 4. Accept Na+ Max 2 if only reference to sodium and not sodium ions...

AQA A-level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023 | VERIFIED. (There are) stretch-mediated sodium ion channels (in the membrane); 2. (Increased pressure) deforms/changes (sensory neurone/axon) membrane/lamella(e) OR (Increased pressure) deforms/changes sodium ion channels; 3. Sodium ion channels open; 4. Sodium ions diffuse in; 5. Depolarisation (leading to generator potential); 3 max (3 x AO1) 1. 2. 3. or 4. Accept Na+ Max 2 if only reference to sodium and not sodium ion...

AQA A level BIOLOGY 7402/3 Paper 3 Mark scheme June 2023. (There are) stretch-mediated sodium ion channels (in the membrane); 2. (Increased pressure) deforms/changes (sensory neurone/axon) membrane/lamella(e) OR (Increased pressure) deforms/changes sodium ion channels; 3. Sodium ion channels open; 4. Sodium ions diffuse in; 5. Depolarisation (leading to generator potential); 3 max (3 x AO1) 1. 2. 3. or 4. Accept Na+ Max 2 if only reference to sodium and not sodium ions 4. Accep...

Factors detectable to the senses - appearance, texture, flavor Appearance - size, shape, color Size & shape determined by - weight, screens, sieves for particle size, visual estimations. Color - gloss, transparency, chroma, & hue Hue - actual color Chroma - intensity or saturation of color 5 Flavors - Sweet, sour, salty, bitter, and umami Colorimeter - measures reflected light (wavelengths) Hunter color values - matches instrumental data with human data Munssel color chips - Used in har...

In this assignment you will read about how to correctly prepare and standardise solutions for colorimetry, the method used, results and an overall conclusion and to determine the concentration of copper (II) sulfate using colorimetry. Due to COVID and lockdown we did not carry out a titration experiment so did not write up in the assignment. Overall, I received a merit in this assignment and the unit overall. Distinction had been attempted but not met.

AQA AS BIOLOGY PAPER 2 2024 QUESTIONS WITH CORRECT DETAILED ANSWERS

What is standard deviation? -Answer a computed measure of how much scores vary around the mean score What is a serial dilution? -Answer used to obtain a series of solution whose concentrations differ by known amounts Why do we measure initial rate of reaction? -Answer Reaction can be controlled, as when reaction starts substrate concentration will decrease fast What does catalase catalyse? -Answer break down of hydrogen peroxide to water and oxygen gas What does coppe...

Suggest why it was not appropriate to estimate the number of Jaguars using the capture-recapture technique (2) - Ans .Estimate will be inaccurate because it is a low number. Dangerous for collector. Most studies estimate the population density of Jaguars South American rainforest to be 5 individuals per 100km2. In the 2007 study: • 100 camera traps were set up covering an area of 271 km2. • 28 images of 9 different jaguars were recorded. How well do these results support a populati...