n. the condition in which a participant being observed is changed in some way by the act of observation. Within an experimental setting, reactivity is viewed as a threat to internal validity because the change in behavior is not due to the experimental manipulation. See also reactive measure.
What is an example of reactivity in psychology?
The Watching-Eye Effect is a type of reactivity in which people behave differently when they’re being watched. People may change their behavior even when they merely see images of eyes, such as a picture of an eye posted on a wall.
What is an example of reactivity in research?
A second instance of reactivity is when the subject reacts to the instrument itself. An example of this is respondents who respond to questions based on how they wish to see themselves or the environment in which they are completing the survey, rather than answering accurately.
What is the concept of reactivity?
Reactivity is the tendency of a substance to undergo chemical reaction, either by itself or with other materials, and to release energy. [ SEMATECH]
What is psychological reactivity? – Related Questions
What are 5 examples of being reactive?
Some reactive phrases to look out for:
- There’s nothing I can do.
- That’s just the way I am.
- He makes me so mad.
- They won’t allow that.
- I have to do that.
- I can’t.
- I must.
- If only.
What are some characteristics of reactivity?
(1) It is normally unstable and readily undergoes violent change without detonating. (2) It reacts violently with water. (3) It forms potentially explosive mixtures with water.
How is the concept of reactivity important?
The author concludes that without chemical reactivity, there would be no hazardous characteristics such as toxicity, ignitability, corrosivity, or flammability exhibited by a substance. Chemical reactivity enhances the hazardous nature of a substance.
What is the main reason for reactivity?
The number of electrons in the atom’s valence shell are responsible for the reactivity and chemical behavior of an atom.
What does reactivity mean in research?
Abstract. A significant consideration in the provision of rigor in qualitative research is the occurrence of reactivity, defined as the response of the researcher and the research participants to each other during the research process.
What is the concept of reaction rate?
reaction rate, in chemistry, the speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.
What is a reaction rate example?
Reaction rates can vary dramatically. For example, the oxidative rusting of iron under Earth’s atmosphere is a slow reaction that can take many years, but the combustion of cellulose in a fire is a reaction that takes place in fractions of a second. For most reactions, the rate decreases as the reaction proceeds.
What factors affect rate of reaction?
We can identify five factors that affect the rates of chemical reactions: the chemical nature of the reacting substances, the state of subdivision (one large lump versus many small particles) of the reactants, the temperature of the reactants, the concentration of the reactants, and the presence of a catalyst.
What is reaction rate and why is it important?
The rate of a reaction is a powerful diagnostic tool. By finding out how fast products are made and what causes reactions to slow down we can develop methods to improve production. This information is essential for the large scale manufacture of many chemicals including fertilisers, drugs and household cleaning items.
How do rates of reaction apply to daily life?
The rate of reaction dictates the rate of production of our daily products. In order to meet the demand and safety standards, optimization of rate of reaction is nonetheless the most important subject to control and study.
What is the most important reaction?
The most important reaction is photosynthesis the process in which plants take in carbon dioxide, water, and the Sun’s energy and generate the oxygen we need to live.
What are the 7 factors that affect the rate of reaction?
The rate of a chemical reaction is affected by several factors like:
- Concentration of reactants.
- Pressure.
- Temperature.
- Catalyst.
- Nature of reactants.
- Orientation of reacting species.
- Surface area.
- Intensity of light.
What are 5 factors that can change a reaction rate?
There are five general properties that can affect the rate of a reaction:
- The concentration of the reactants. The more concentrated the faster the rate.
- Temperature.
- Physical state of reactants.
- The presence (and concentration/physical form) of a catalyst (or inhibitor).
- Light.
How do you measure the rate of a reaction?
The rate of reaction can be found by measuring the amount of product formed in a certain period of time. The mass of a solid product is often measured in grams, while the volume of a gaseous product is often measured in cm 3. The time period chosen may depend upon the rate of the reaction.
How do you determine the rate of a reaction?
Rate of reaction=Amount of product formedTime taken for the formation of the product (in terms of concentration of products)
How does concentration affect reaction rate?
Increasing the concentration of one or more reactants will often increase the rate of reaction. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.
