What is IA in chemistry?

What is IA in chemistry?

You’ve reached that stage in your IB journey where you have to decide what to do for your Chemistry Internal Assessment (IA). Like many IB students, you may be finding it challenging to think of an idea that a) you are really interested in and b) is feasible for you to complete given the time and resources available.

How do I choose a chem IA?

Choosing your research question

1. Think about the ‘big idea’ behind your potential project and identify the chemical reaction at its centre.
2. Think about which factors will affect the reaction, focusing on only those that are relevant and that can be measured and controlled.

How long should a science ia be?

between 6 and 12 pages
The Internal Assessment write-up should be between 6 and 12 pages long. Investigations exceeding this length will be penalized in the communication criterion as lacking in conciseness. The following outline is suggested for your IA, however, you may adjust in any way you choose.

What affects the rate of reaction?

Reactions occur when two reactant molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

What is a passing IA score?

Each IB subject is assessed on a scale of 1 – 7 with a score of 4 considered a “passing grade”. This score is calculated based on a combination of internal and external assessments throughout the 11th and 12th grade years.

What do you mean by rate of reaction?

Rate of reaction is concerned with how quickly a reaction reaches a certain point. It can be defined as the decrease in concentration of the reactants per unit time or the increase in concentration of the products per unit time.

Which is the instantaneous rate of a reaction?

The instantaneous rate is the rate of a reaction at any particular point in time, a period of time that is so short that the concentrations of reactants and products change by a negligible amount. The initial rate is the instantaneous rate of reaction as it starts (as product just begins to form).

How is the rate of a chemical reaction related to the wage?

Wage is a rate that represents the amount of money earned by a person working for a given amount of time. Likewise, the rate of a chemical reaction is a measure of how much reactant is consumed, or how much product is produced, by the reaction in a given amount of time.

How are reaction rates measured in aqueous solution?

For reactants and products in solution, their relative amounts (concentrations) are conveniently used for purposes of expressing reaction rates. If we measure the concentration of hydrogen peroxide, H 2 O 2, in an aqueous solution, we find that it changes slowly over time as the H 2 O 2 decomposes, according to the equation: