package deal of OCR-A Correctly Answered Rated 100%.

Abiotic components - correct answer Components of an ecosystem that are non living Abiotic factors - correct answer Non living components of an ecosystem that effect other living organisms Acetycholine - correct answer ...

why do specimens need to be thin when observing them under a light microscope? - correct answer to allow light to pass through identify and explain the starch test - correct answer add iodine dissolved in potassium iodide sol...

- Sn = n/2 (2a + (n-1)d) - Sn = n/2 (a + l) where a is the first term and l is the last term - correct answer formula of an arithmetic series the sum of the terms of an arithmetic sequence - correct answer what is an arith...

agonist - correct answer creates movement antagonist - correct answer opposed the agonist providing a resistance for co-ordinated movement fixator - correct answer stabilises one part...

agonist - correct answer creates movement antagonist - correct answer opposed the agonist providing a resistance for co-ordinated movement fixator - correct answer stabilises one part...

first ionisation energy - correct answer the energy required to remove one electron from each atom in a mole of gaseous atoms to form one mole of gaseous 1+ ions second ionisation energy - correct answer the energy required...

What is the issue of using a conical flask, water bath and bung to collect gas? How can this be modified? - correct answer 1. some gas escapes before the bung is replaced. Instead, put the solid in a specimen tube in a conical flask and mix together 2. some CO2 ...

X-rays - correct answer Short wavelength electromagnetic waves, from 10^-8 to 10^-13m, used for medical imaging X-ray tube - correct answer a piece of equipment that produces X-ray photons by firing electrons from a heated ...

What is a sole trader? - correct answer A single person who owns a business and is unincorporated (doesn't exist in its own right) What are the advantages of being a sole trader? - correct answer Few legal requirements, qu...

What does abiotic mean? - correct answer Non-living What does biotic mean? - correct answer living What is the definition of tropism? - correct answer Growth response to a stimulus ...

Electronegativity - correct answer The attraction of a bonded atom for a pair of electrons in a covalent bond. What affects electronegativity? - correct answer Nuclear charge, atom size, how close the shared pair of electro...

Electron repulsion theory (VSEPR) - correct answer Electrons are negative, so they will repel each other. Electrons around the central atom determine the shape. The electrons will try and be as far apart from each other as possible. Linear - correct answer ...

Which 2 transition metals do not have a fully filled 4s orbital? - correct answer Chromium and copper What advantage does a fully or half filled shell give a transition metal and why? - correct answer Makes more stable W...

ATP name - correct answer adenosine triphosphate ADP name - correct answer adenosine diphosphate Five facts about energy - correct answer Cannot be created or destroyed, can be transf...