Also sometimes known as a strong back, a strongback is a type of construction that helps to enhance the strength of some type of structure by adding a secondary support at a key point in the design.

Is it cheaper to do a loft conversion or an extension?
Are cost-effective Loft conversions are a cheaper way of expanding the size of your home; in comparison to a full extension or moving home completely, the cost of a loft conversion comes in a lot cheaper. Feb 11, 2019
Is it OK to board over loft insulation?
Basic loft insulation, which is required for either a warm or cold loft, is inserted between the joists or rafters. This may then be boarded over, but 270mm will probably come up over the joists. Therefore it's important to raise the boards, to prevent restricting ventilation and overheating electricity cables.

What adds most value to a house?

Let's dive in! Add Beauty. Okay, the first thing you can do to increase home value is to make your home more attractive—literally. ... Add More Space. Bigger homes tend to sell for more money. ... Add Energy Efficiency. ... Add Updated Systems and Appliances. ... Add Technology. Mar 31, 2020
What is a striker in a lab?
Striker. A piece of flint held inside a small bowl and attached to a metal piece that can be rapidly slid across the flint to create a spark. Used to light Bunsen burners.
How do you use a striker on a Bunsen burner?
STEPS TO LIGHT BUNSEN BURNER: Check connections to burner and desk outlet valve. Close needle valve and collar. Open desk outlet valve fully. Open needle valve 1/2 turn. Use the spark lighter to light the flame. Adjust collar and needle valve till you see a blue flame.
What is a striker Bunsen burner?
The striker is commonly used to light a Bunsen burner. ... The striker has an advantage that it's longer than a match (avoid burning your fingers), and produces sparks, as opposed to an open flame, to light the burner. The striker has a shape similar to a large safety-pin and is squeezed in the same manner.
What is a striker?
1 : one that strikes: such as. a : a player in any of several games who is striking or attempting to strike a ball. b : the hammer of the striking mechanism of a clock or watch. c : a blacksmith's helper who swings the sledgehammer.

What holds a burette onto a ring stand?

Used to hold and heat liquids. ... Used in titrations to measure precisely how much liquid has been delivered. burette clamp. Used to hold burettes on a ring stand.
What is the color of the flame when the air inlet holes are closed?
The flame when the air-hole is open is blue, luminous, and clean. When the air-hole is closed, however, there is less oxygen available. This results in incomplete combustion of the gas. The color of the flame changes to yellow and the flame is wavy.
When lighting a Bunsen burner the air hole should be?
Place the Bunsen burner on a heat-resistant mat 30 to 40 cm from the edge of the bench. Make sure the air hole is closed (unless you are lighting the gas with a piezo-electric lighter, in which case air hole should be half open).
What is a Scoopula used for?
Scoopula is a brand name of a spatula-like scoop utensil used primarily in chemistry lab settings to transfer solids: to a weigh paper for weighing, to a cover slip to measure melting point, or a graduated cylinder, or to a watch glass from a flask or beaker through scraping.
Why is a blue flame preferred over a yellow?
A blue flame from a Bunsen burner transfers more energy than a yellow Bunsen flame as complete combustion gives a blue flame. Incomplete combustion gives a yellow flame and so less energy is released. When combustion is incomplete, a yellow flame is seen. This is because a yellow flame produces a lot of soot.
How do you start a burner?
How to Turn on an Electric Stove Top Burner Place your pan or pot over the appropriately sized burner. ... Find the knob that controls the electric stove top burner that you want to turn on. ... Push in the knob for the electric stove top burner slightly. ... Turn the burner to the right.
What causes burners to strike back?
With too little air, the gas mixture will not burn completely and will form tiny carbon particles that are heated to glowing, making the flame luminous. With too much air, the flame may burn inside the burner tube; that is, it may strike back.

What is strike in football?

Strike, a term used in Association football (soccer) to mean an accurate, driven shot kicked using the laces of the boot.
Is Stricker a word?
Stricker is a noun. A noun is a type of word the meaning of which determines reality.
What holds 100ml water?
A 100 ml volumetric flask is designed to hold exactly 100 ml, but if the liquid is poured out it will actually deliver a little less than 100 ml. Glassware designed to deliver, like pipets and burets, are marked with a TD. These pieces of glassware account for the small amount of liquid that remains behind.
What attaches to a ring stand?
The ring stand has a heavy base and upright rod for supporting each accessory. A ring support attaches to the stand to support other equipment. Wire gauze rests on the ring to support glassware above an alcohol burner. The triangle rests on the ring to support funnels, crucibles and evaporating dishes.
Are used for holding small samples?
Beakers are useful as a reaction container or to hold liquid or solid samples. They are also used to catch liquids from titrations and filtrates from filtering operations.
What happens to the flame when you increase the air flow?
Increasing the air flow to the burner produces more complete combustion and a hotter flame. The air is increased by opening up the air vent (turning the metal collar). ... Sometimes when the air flow is being adjusted, the flame may “blow out.” If this happens, simply turn off the gas and close the air vent.
Is a blue flame hotter than a yellow flame?
Blue flames aren't always hotter than yellow flames, because the color of light emitted by the flame can depend on exactly which atoms and molecules are in the flame. ... This does not mean that the temperature of the whole fire went up, just that these chemicals made the color change. Oct 22, 2007
What color flame is the hottest?
blue Although red usually means hot or danger, in fires it indicates cooler temperatures. While blue represents cooler colors to most, it is the opposite in fires, meaning they are the hottest flames. When all flame colors combine, the color is white-blue which is the hottest. Jan 9, 2020

Why is the blue flame hazardous?

A blue flame means complete combustion is taking place. ... The above are all indications of incomplete combustion. The result is that you could be wasting gas and/or generating dangerous carbon monoxide. The latter is a serious safety problem, if it occurs with an indoor appliance. Nov 1, 2019
Which flame is the most luminous?
One of the most familiar instances of a luminous flame is produced by a Bunsen burner. This burner has a controllable air supply and a constant gas jet: when the air supply is reduced, a highly luminous, and thus visible, orange 'safety flame' is produced.
Under what conditions will the flame strike back?
Strike back occurs when there is too much oxygen and create a green flame at the jet of the Bunsen Burner and creates a loud noise. This only occur when the air hole is fully open.
What is clay triangle?
A clay triangle is a wire and ceramic triangle used to support a crucible while it is heated over a Bunsen burner. A crucible is a ceramic vessel with a lid that is used to heat solid chemical substances to high temperatures to dry them completely or to induce a reaction without solution.
How much is a Scoopula?
Available Discounts Cat No. - NC-0829 Price: $1.95 Qty: * 3 more rows
Why is working at a fume hood often preferable to working at a lab bench?
Why should you avoid wearing baggy clothing in the lab? ... Why is working at a fume hood often preferable to working at a lab bench? The ventilation system pulls fumes and fires away from you and the lab. Which of the following can be prevented by washing your hands after working in the lab?
Is Blue Fire hotter?
The color blue indicates a temperature even hotter than white. ... Blue flames have more oxygen and get hotter because gases burn hotter than organic materials, such as wood. When natural gas is ignited in a stove burner, the gases quickly burn at a very high temperature, yielding mainly blue flames.
Does a blue flame have more oxygen?
With a blue flame, complete combustion is happening, as the flame is getting enough oxygen. This also creates less soot and a higher temperature. Jan 6, 2019

What is the difference between a blue and orange flame?

Blue flames burn hotter than orange flames, with temperatures reaching up to 3,000 degrees Fahrenheit. ... They heat up more quickly and to higher temperatures than fires using other fuel sources, resulting in a blue flame. Dec 5, 2018
Can you light a gas stove with a lighter?
You can still manually light nearly every modern gas stove with a match or lighter, even if the igniter is broken. Matches are safer and will work better than typical cigarette lighters. ... Light match. Hold very close to the holes in the center of the burner that fire usually comes out of. Jun 3, 2009
How many BTUs do I need to fry fish?
30,000 BTU 30,000 BTU burners will fry fish. The camnpchef (2 ro 3 burners) will afford you alot of versatility, and ease of portability. However if you are looking for just a dedicated fish cooker, to fry several large batches of fish etc, I would look at those type cookers(single burner) that run 150,000 BTUs. Jun 26, 2007
What should we do when a strike back occurs?
This condition, known as strike back, heats the barrel to dangerously high temperatures. Should strike back occur, extinguish the flame immediately by closing the bench valve. Once your flame has been properly adjusted, extinguish the flame by rapidly turning the bench valve to the closed position.
What is striking back in chemistry?
Striking back is the phenomenon in which flame travels down the burner tube and begins to burn at the nozzle near the base. This happens when vents are fully open. The flow of much air and less gas makes the flame become irregular and it strikes back.

What is a strike back?

: to try to hurt someone who has hurt one or treated one badly When he called her lazy, she immediately struck back by calling him fat.
What does it mean to be striking?
noticeable, remarkable, prominent, outstanding, conspicuous, salient, striking mean attracting notice or attention. noticeable applies to something unlikely to escape observation.
How do you use strike?
Strike sentence example He heard the clock strike ten. ... He saw his sister drop after the strike of a sword. ... Anything that would indicate where his next strike would fall. ... You don't strike me as the type to feed ducks. ... Alarmed, Taran turned in time to see the man with eyes the color of Vara's strike his father down. More items...
What sport has a strike?
baseball What is a strike? During each at bat in baseball the batter gets up to three strikes to hit the ball. A strike is anytime the hitter swings at a pitch and misses or any pitch that is in the strike zone (whether the hitter swings or not). Three strikes and the batter is out!
Which glassware is the most precise?
Volumetric Glassware Volumetric pipets, flasks and burets are the most accurate; the glassware makers calibrate these to a high level of accuracy. The accuracy is usually measured in terms of the tolerance, which is the uncertainty in a measurement made with the glassware.
What is mixing a small amount of chemicals together?
Funnel. Mixing a small amount of chemicals together. Well Plate. Heating contents in a test tube. Test Tube Clamps.
What would you use to measure exactly 43 mL of water?
Terms in this set (22) beaker. pouring 50 mL of liquid from one container to another. graduated cylinder. measuring exactly 43 mL of water. test tube rack. holds test tubes. test tube. holds small amounts of liquid. watch glass. covering a beaker of boiling water to prevent splattering. tongs. ... erlenmeyer flask. ... scoopula/spatula. More items...

What is a ring stand for?

Ring Stand Used to hold or clamp laboratory glassware and other equipment in place, so it does not fall down or come apart.
What are ring stands used for?
Noun. (chemistry) An item of laboratory equipment consisting of a metal pole with a solid, firm base, used to hold or clamp laboratory glassware and other equipment in place, so that it does not fall down or come apart.
What is used to weigh substances?
Weigh boats and weigh paper are used to hold substances for measurement on the balance. They prevent the weighing pan from getting dirty or damaged by chemical reagents. Spatulas are the instruments used to manipulate the samples that are to be weighed.
What does a graduated cylinder look like?
A graduated cylinder, also known as measuring cylinder or mixing cylinder is a common piece of laboratory equipment used to measure the volume of a liquid. It has a narrow cylindrical shape. Each marked line on the graduated cylinder represents the amount of liquid that has been measured.
Why is there a mark of color in the beaker?
Beakers of colored water used to demonstrate the concept of renal clearance. Beaker A contains a red dye and represents plasma before being processed by the kidneys.
Which item is best used to contain a liquid that is to be heated?
Flasks Flasks. A round-bottom flask, also known as round-bottomed flask or Erlenmeyer Bulb, is used for heating or boiling liquids evenly. They have a cone shaped neck with a spherical bottom and are mainly used in distillation experiments.
How do you control the height of the flame?
Adjusting the Flame. Use the needle valve to control the flame's size. The needle valve on the bottom of the Bunsen burner adjusts the gas flow rate, which determines the height of the flame. More gas will create a larger flame, and less gas gives you a smaller flame.
What is flame explosion temperature?
If no heat is lost in this process, the temperature of the combustion products is known as the "Adiabatic Flame Temperature." 2,328 K or 2055 C. For hydrogen burning in air at 1 atmosphere the Adiabatic Flame temperature is 2,400 K or 2127 C.
What color is the gas flame with insufficient air and why?
A blue flame from your furnace or gas stove indicates complete combustion of the gas. If you have a yellow, orange, or red burner flame, this usually means that your burner is not receiving enough air for complete combustion. Nov 10, 2017
What is the hottest color?
Stars have different colors, which are indicators of temperature. The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.
Is blue or purple fire hotter?
This energy is then felt in the form of temperature, or heat. Thus the colors of light with the highest frequency will have the hottest temperature. From the visible spectrum, we know violet would glow the hottest, and blue glows less hot. Nov 3, 2016
What is the hottest thing in the universe?
A CERN experiment at the Large Hadron Collider created the highest recorded temperature ever when it reached 9.9 trillion degrees Fahrenheit. The experiment was meant to make a primordial goop called a quark–gluon plasma behave like a frictionless fluid. That's more than 366,000 times hotter than the center of the Sun. Jun 21, 2017
What is the coldest flame color?
black The coldest flame color will be black since the flame is so weak that it barely produces light. Color also tells us about the temperature of a candle flame. The inner core of the candle flame is light blue, with a temperature of around 1800 K (1500 °C).
Is there black fire?
Flames emits light and heat, so it seems impossible to make black fire. However, you actually can make black fire by controlling the wavelengths of absorbed and emitted light. Sep 29, 2018
What burns with a black flame?
This is black fire. When you mix a sodium street light or low-pressure sodium lamp with a flame, you'll see a dark flame thanks to the sodium and some excited electrons. “It's strange to think of a flame as dark because as we know flames give out light, but the sodium is absorbing the light from the lamp.
What is a PVC street elbow used for?
PVC Sch. 40 Pressure 90° MIPT x Slip Street Elbow is used for cold-water pressure systems. It can be used in irrigation, swimming pools, spas and gardens. It is manufactured from type 1 grade 1 PVC for optimum performance.