Testing For Hydrogen Gas

Testing for Hydrogen Gas 

Aim: To show that hydrogen gas is produced when a metal reacts with acid.

Method: 

1. Add your sample of metal to your test tube. Add 2ml of acid.

2. Carefully invert the boiling tube above the test tube containing the metal and acid.

3. Hold the test tubes together for a few minutes, allowing time for the inverted boiling tube to fill with gas.

4. When you think the tube is full, Mr Heath should light the wooden splint.

5. Carefully, but quickly, tilt the boiling tube full of gas upwards and insert the burning splint into the mouth of the test tube.

Results:

It made a popping sound.

Discussion: 

When the reactants (Metal + Acid) mixed together it resulted in two products (Metal Salt + Hydrogen). Because we trapped the Hydrogen gas into the test tubes it started to heat up and bubble. Because of this we knew that it was ready to have the splint put into it. When the splint was put in the test tube it reacted with the Hydrogen gas resulting in the popping sound.

Conclusion:

The experiment worked because the end result was a popping sound. I wouldn't change anything.   

Organs - Science

Hello, in science we have been learning about the digestive organs, and how they work. Ingestion is the consumption of a substance by an organism. In animals, it normally is accomplished by taking in a substance through the mouth into the gastrointestinal tract; such as through eating or drinking. In single-celled organisms, ingestion takes place by absorbing a substance through the cell membrane.

Egestion- Egestion is the act or process of voiding or discharging undigested food as feces. To egest means to discharge undigested material or food.

Digestion-Digestion is the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma. In certain organisms, these smaller substances are absorbed through the small intestine into the bloodstream.

x

Absorption-

Digestion is the chemical breakdown of the ingested food into absorbable molecules. Absorption refers to the movement of nutrients, water, and electrolytes from the lumen of the small intestine into the cell, then into the blood.

Teeth-

Food is broken down into smaller pieces in the mouth by chewing. This is an example of mechanical digestion. The teeth cut and crush food, and the pieces are mixed with saliva to form a ball of food called a bolus.

Large intestine -

The large intestine (colon or large bowel) is about 5 feet long and about 3 inches in diameter. The colon absorbs water from wastes

Esophagus -

Anatomically and functionally, the esophagus is the least complex section of the digestive tube. Its role in digestion is simple: to convey boluses of food from the pharynx to the stomach. The esophagus begins as an extension of the pharynx in the back of the oral cavity.

Stomach -

The stomach secretes acids and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine

Anus -

The anus is the opening at the far end of the digestive tract through which stool leaves the body. The anus is formed partly from the surface layers of the body, including the skin, and partly from the intestine. The anus is lined with a continuation of the external skin.

Liver -

The liver is an organ about the size of a football. It sits just under your rib cage on the right side of your abdomen. The liver is essential for digesting food and ridding your body of toxic substances. Liver disease can be inherited (genetic).

Rectum -

The rectum is the concluding part of the large intestine that terminates in the anus. The average length of the human rectum may range between 10 and 15 cm. Its diameter can be compared to that of the sigmoid colon (the part of the large intestine nearest the rectum)

Small intestine -

The small intestine or small bowel is an organ in the gastrointestinal tract where most of the end absorption of nutrients and minerals from food takes place. It lies between the stomach and large intestine and receives bile and pancreatic juice through the pancreatic duct to aid in digestion.

Heart Dissection

Heart Dissection

What Have We Been Learning About?

In science we have been learning about the heart. The reason we have been learning about the heart is to get a better understanding of whats inside the heart.

Why Did We Dissect The Heart?

We were dissecting the heart so we could get a better understanding of the main parts of the heart ans how the heart works.

What Are The Parts Of The Heart?

The main parts of the heart we saw were the ventricle, valve, atrium.

Did You Enjoy Dissect The Heart?

No, It was yuck.

How the hand works

In science we have been learning how do hands work, we made a hand to show you how it works. The hand has lots of parts which are Bones, Joints, Muscles, Tendons, and ligaments. These are all the parts that make your hand move. Bones is really helpful for us human because it helps us provide support. 

How do hands work? The movements of the hand are always started by the muscles in your forearm. Hands have a lot of things that help human beings one is we use our hand to write or hold something that is heavy or not. 

The human hand is made up of the wrist, palm, and fingers and has 27 bones, 27 joints, 34 muscles, and over 100 ligaments, and tendons, and many blood vessels and nerves.

Science

Aim:To look at different kitchen ingredients in scones and their effects.
Materials:

Plate
Bowl
Flower
Butter
 Spoons
 Baking Powder
 Lemonade
 Milk
Process:
Findings:

Normal
Flower
Butter
Baking Powder
Milk
Lemonade
Flower
Lemonade
Baking Powder
Butter
Lemonade & Milk
Flower
Lemonade
Milk

Science Roadshow

Today we/7AL & 7TZ went to the learning street and done some awesome science stuff, like experiments and basic stuff like ice and fire show and a reproduction show. Overall it was fun I had so much fun. My favorite part tied was a chair where when you put your hands near your chest you would spin faster and if you done the opposite it would go slower, and my other favorite was when you were behind a round curtain and the curtain would turn around you and it would feel like you were spinning. 

PH Scale

Today in science we made a PH Scale So this is mine

Science, Week 9, 21st September

Today in science we done a experiment with a 10c coin, heres what you need,
-
Heat Mat
Bunsen Burner
Tripod
Gauze Mat
Bunsen Burner
--------------------------------------------------------------------------------------------------------------------------
So once you have collected all of those you need to set it up in the obvious way. Heat Proof Mat, Bunsen Burner on top of that, Tripod hovering over top, Gauze Mat on top of the Tripod and then Bunsen Burner.

Put zinc-nitrogen in-to the Busen Burner and put in on orange flame until its boiling the change the flame to blue put the 10c coin in for 10 mins and then get it out and put it under water then put it under the blue flame for 5 mins and wet it the wipe it with a paper towel

What does it look like?     Why does it look like that?

Equipment In Science

Equipment In Science
In science we where learning what each item we use is actually used for. Here's a DLO Tyler
and I made.

Beaker

A beaker is used for holding a liquid

Measuring Cylinder

A measuring cylinder is used to measure volumes of liquids.

Test Tube Tongs

Test tube tongs are used to hold test tubes.

Spatula

A spatula is used for scooping powders.

Stirring Rod

A stirring rod is used for stirring chemicals.

Dimple Tray (Spotting Tile)

A dimple tray is used for watching (observing) chemicals change.

Conical Flask

A conical flask is used for mixing liquids.

Thermometer

A thermometer is used for measuring the temperature of a liquid.

Tripod

A tripod is used for holding a beaker/flask above a flame.

Bunsen Burner

A Bunsen burner is used for heating experiments.

Scissor Tongs

Scissor Tongs are used for holding hot objects.

Gauze Mat

A gause mat is used to evenly spread a flame under a beaker.

Heat Mat

A heat mat protects the bench from burning

Make a paperclip float

Have you wondered how to make a paperclip float?, well this is how to

What you need-
Beaker or glass bowl
Paper clip
Tissue
Water
Pencil

How to do-
Put the water in the glass bowl/beaker then put the paper clip in will it float? No.
get the paper clip out the make the tissue a good size to fit in the bowl/beaker the put the paper clip on the tissue in the water.Push the tissue down to the bottom of the bowl/beaker and...
The paper clip is floating

Water Temprature

Today we are at science and we are making ice go to water and then to steam its very interesting, to do this you need to have.
-
1. 250ml beaker
2. Thermonertar
3. Tripod
4. Bunsen Burner
5. Heatproof Mat
6. Gauze Mat
7. Stopwatch
8. Ice cubes

Method:

1. Collect enough ice to half fill the beaker and place the thermometer in the ice cubes while you set up the rest of the equipment.
2. Set up the bunsen burner, heatproof mat, gauze mat and tripod.
3. Place the beaker on the gauze mat and gently clamp the thermometer so that it is held upright. The bottom of the thermometer should be low enough to be covered by the water but not toughing the bottom of the beaker.
4. Record the temperature of the ice.
5. Light the Bunsen Burner and start timing with your stopwatch.
6. Record the temperature every 1 minute
7. Keep recording until the water has been boiling for 1-2 minutes.

Findings:

Time (min)	Temp.	Time (Min)	Temp.	Time (Min)	Temp.
0	-0.5	12	93	24	finished
1	13	13	97	25	finished
2	15	14	100	26	finished
3	13	15	finished	27	finished
4	12	16	finished	28	finished
5	17	17	finished	29	finished
6	21	18	finished	30	finished
7	30	19	finished	31	finished
8	42	20	finished	32	finished
9	58	21	finished	33	finished
10	71	22	finished	34	finished
11	82	23	finished	35