SOLUBILTY CURVE OF THREE SALTS IN WATER

 

COMPARING SOLUBILITY OF THREE DIFFREENT SALTS 

ANALYSE THE DATA GIVEN IN THE SOLUBILITY CURVE AND ANSWER THE QUESTIONS GIVEN IN THE WORKSHEET

SOLUBILTY OF DIFFERENT SALTS IN WATER

    COMPARING SOLUBILTIY OF THREE DIFFERENT SALTS 

   ANALYSE THE DATA IN THE TABLE GIVEN BELOW AND ANSWER THE QUESTIONS IN THE WORKSHEET

HOW MASS IS CONSERVED

 

Let’s consider a simple chemical reaction involving the combustion of methane (CH₄) in oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O). The balanced chemical equation for this reaction is:${\text{CH}}_4(g)+2{\text{O}}_2(g)\to {\text{CO}}_2(g)+2{\text{H}}_2\text{O}(g)$Methane + Oxygen → Carbon Dioxide + Water

Data Table for Analysis

To understand this reaction better, we can analyze the masses of the reactants and products involved:

LAW OF CONSERVATION OF MASS

 

Let’s consider a simple chemical reaction involving the combustion of methane (CH₄) in oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O). The balanced chemical equation for this reaction is:${\text{CH}}_4(g)+2{\text{O}}_2(g)\to {\text{CO}}_2(g)+2{\text{H}}_2\text{O}(g)$Methane + Oxygen → Carbon Dioxide + Water

Data Table for Analysis

To understand this reaction better, we can analyze the masses of the reactants and products involved:

Analysis of the Data

1. Mass of Reactants:
   • The mass of methane (CH₄) is 16 grams.
   • The mass of oxygen (O₂) is 64 grams $2\times 32\text{g/mol}<br>$
   • Therefore, the total mass of the reactants is: $16\text{g}+64\text{g}=80\text{g}$
2. Mass of Products:
   • The mass of carbon dioxide (CO₂) produced is 44 grams.
   • The mass of water (H₂O) produced is 36 grams $2\times 18\text{g/mol}<br>$
   • Therefore, the total mass of the products is: $44\text{g}+36\text{g}=80\text{g}$

WHAT DOES RBC DO IN YOUR BODY

 

FUNCTION OF RBC

 

Functions of RBC : transport around the body

One of the key functions of blood is transport. Blood vessels are like networks of roads where deliveries and waste removal take place. Oxygen, nutrients and hormones are delivered around the body in the blood and carbon dioxide and other waste products are removed.

The heart is constantly pumping blood so it is always moving around the body.

Transporting oxygen is a vital role of the red blood cells.

When we breathe in, the millions of air sacs in the lungs fill with fresh oxygenated air. The oxygen then moves into the blood by passing first through the very thin walls of the air sacs and then into the capillaries, which are tiny blood vessels in a network within the lungs.

Red blood cells squeeze through narrow capillaries in single file. Haemoglobin molecules inside red blood cells pick up and carry the oxygen. These oxygen-rich cells travel in the blood vessels from the lungs to the left side of the heart. The blood is then pumped around the body.

Red blood cells are adapted for the transport of oxygen. They are small and flexible so they can fit through narrow vessels, have a bi-concave shape which maximises their surface area to absorb oxygen, have a thin membrane so gases easily diffuse through, and contain haemoglobin which binds to oxygen.

 

RESPIRATION AND ENERGY

     

RESPIRATION AND ENERGY RELEASE 

Glucose and oxygen react together in cells to produce carbon dioxide and water and release energy.

Here is the word equation for aerobic respiration:

glucose + oxygen → carbon dioxide + water + energy

This is called AEROBIC Respiration – because it needs oxygen from air for it to work

RESPIRATION

 

Respiration

The source of the energy required to regenerate ATP is the chemical energy stored in food (e.g. glucose). The cellular process of releasing energy from food through a series of enzyme-controlled reactions is called . Some of the energy released is used to produce ATP. Some of the energy released is lost as heat.

Mammals need to release heat energy from food to keep their body temperature close to the optimum operating temperature for their enzymes.

There are two types of respiration. Aerobic respiration occurs if oxygen is present in the cell.  occurs if oxygen is absent.

Aerobic respiration

The following is a summary word equation for aerobic respiration.

$glucose+oxygen\to carbondioxide+water+energy$

In reality the process of respiration consists of a series of reactions that can be divided into two stages. Stage one takes place in the cytoplasm and stage two occurs in the mitochondria of animal, plant and fungal cells.