Introduction: Water is a simple molecule created by two hydrogen bonds and one oxygen bond. Water’s formula is H2O because there are two hydrogen bonds and there is one oxygen bond. When these three bonds come together, they become strong and unbreakable. Water is very important. It is important to earth and to your body. Water covers 70% of earth’s surface and your body contains about 60% of water. Water is not just a liquid. Water can also be a solid or gas. Ice is water, but in the form of a solid and a gas is water, but in the form of vapor. Water’s state of matter can change easily due to a temperature increase or decrease. Changing water’s state of matter is a physical change, meaning it can be reversible. So, the objective of this lab is to see how temperature can change water’s state of matter.
Purpose/Problem:
Will the temperature of water continue to rise if heat energy is added to it? What happens to the temperature of water during a change of state?
Hypothesis:
If the temperature is changed, then the water’s state of matter will change because an increase of temperature will form a gas and a decrease of temperature will from a solid.
Materials:
• 1 250 mL. beaker
• Ice
• 1 thermometer
• Hot Plate
• Stopwatch
• Fire-Retardant Glove
• Goggles
Procedures:
1) Gather all materials
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The hypothesis stated that if the temperature is changed, then the water’s state of matter will change because an increase of temperature will form a gas and a decrease of temperature will from a solid. The hypothesis was correct. The ice started to melt due to the room temperature being hotter than the ice, so it formed a liquid. When the beaker was placed on the hot plate when it was turned on, it made a big temperature change. Due to that temperature change, a gas was formed from a liquid and that liquid use to be a solid. Therefore, temperature changes water’s state of
B. While heating two different samples of water at sea level, one boils at 102°C and one boils at
The objective of this experiment was to learn how water displacement affected density. Another objective was to identify the metals used in our experiments. We used a variety of different metals to test their correlation and to find out if it was negative or positive. I did not expect to learn much from this experiment as we had already discussed density in class and learned that water displacement is basically volume so as it increased the density would have decreased had we used metals of the same mass.
Throughout the article, the author talks about how the properties of water can be related to square dancing. The molecules of water take the place of the dancers as they move coordinately. Water does not conform to the same properties of other liquids. Water has many different properties that are talked about in the article. The most famous and most talked about property in the article is water’s density at low temperatures; like how it expands as it cools. Other liquids condense as they get cooler but water does the opposite. At super cooled temperatures, the properties of water become stranger as it is able to exist as a liquid much below its freezing point. Another strange property of water is that in super cooled states, it splits into two
The bonding within the water molecule and the interaction between the water molecules causes the molecules to organise themselves in a bent shape. Both a space model and electron dot diagram of a water molecule have been supplied in the appendix – Image 1. Water has many unique properties, which has allowed life to exist: for example, if ice didn’t have a lower density than water, the oceans would have frozen from the bottom up, killing all forms of life. Water is denser than ice because the molecules in ice are further from each other than they are in water. Another property of water is that it is a good solvent and is often called the ‘universal solvent’ because of the number and variety of substances that dissolve in it, including inorganic salts like sodium chloride separate. This is because the cations are attracted to the negative end of the water molecule (the oxygen atom) while anions are attracted to the positive end of the water molecule (the hydrogen atoms). The separated ions are then surrounded by water molecules and are said to be ‘hydrated’ ions. However, the presence of different solutes, such as sodium chloride, can change some of the properties of water. One thing solutes often do is decrease the freezing point and increase the boiling point. This adjustment can then be used as an advantage, for example, when 76g of ethylene glycol, or antifreeze, is added to 1000g
The word “aquation” used in the title of the experiment represents how one or more molecules of water are incorporated into another division. This could occur with or without one or more atoms added into the group.4 This process takes place in this experiment where 1,10-phenanthroline is considered as the other division. Water molecules are incorporated into1,10-phenanthroline.
H2O, more commonly referred to as water, is a covalent molecular structure with hydrogen bonding acting as the intermolecular forces. Waters molecule is comprised of two hydrogen atoms and one oxygen atom covalently bonded. H2O is a colorless, viscous liquid at room temperature. Waters polarity makes it the number one universal solvent. It also has a relatively high heat capacity, this allows it to regulate fluctuating temperatures, which creates an environment able to sustain life. Another unique property water obtains is the ability to expand when forming into a solid, for the reason of a change in the crystalline arrangement of the hydrogen bonds.
One state of matter of water is water as a liquid. Water in temperature varies from different bodies of water. It can be warm or cold. When it is dropped it splatters. It has no taste or color. Water as a liquid has an indefinite shape. This is because water takes the shape of it’s container. Water cannot be compressed, it will only splash when you try. Finally, water has a definite volume. This means that the volume of water will not change.
Water is a molecule which is made up of two hydrogen atoms and one oxygen atom. Water can appear in forms like gasses (steam/water vapor from a kettle), liquids (drinking water or mineral water), and a solid form (ice is the only example of solidified water). The human body has more than a half of total water content. Water has specialised properties as the hydrogen (2 atoms) and oxygen (1 atom) connect to each other to make a water molecule. The hydrogen atoms join the top of the water molecule when the hydrogen atoms connect with oxygen. This structure means that the water has polarity. Polarity is an electric charge which has the power to get the attention of other atoms. The last part of the water molecule contains two hydrogen bonds which are positively charged however, the hydrogen bond which connects the oxygen to the hydrogen’s is negatively charged that is why they have each other’s attention as opposites attract. Water has a high specific heat capacity of 4181 J/Kg degrees which is higher than oxygen which has 918 J/Kg degrees. If water is clean then the pH will be 7.Water has a neutral pH in its uncontaminated form (pH 7).The intermolecular forces which are found in water are hydrogen bonding. Due to hydrogen bonding the boiling point of water is high because hydrogen bonding is very powerful. The hydrogen bonds are sticky this is what makes the hydrogen molecules join to the oxygen molecule. It is not as powerful as covalent bonds but it is more powerful
Water has a high specific heat capacity compared with other liquids. This means that a large increase in energy results in a comparatively small rise in the temperature of the water. This is because much of the heat absorbed is used to break the hydrogen bonds that hold the molecules together. Water is good at maintaining its temperature at a steady level, irrespective of fluctuations in the temperature of the surrounding environment. This is important because the range of temperatures in which
The simplest atomic number 1 chalcogenide, it is by far the most studied chemical substance compound and is described as the "universal result " for its ability to (mix with and become component percentage of a liquid) many substances. This allows it to be the "solvent of animation ".[ It is the only commons substance to exist as a solid state , liquid, and gas in nature. Water is a basic corpuscle made up of two hydrogen mote s and one atomic number 8 atom. When these three mote come together, they form a strong Bond that is very hard to breaking . The metier of this bond keeps a body of water supply molecule together for millions and even 1.000.000,000 of old age . Water is a open /open and honest and nearly clear/white chemical substance that is the main voter /part of Earth's flow , lakes, and oceans, and the fluids of most living being . Its chemical formula is H2O, meaning that its molecule contains one oxygen and two hydrogen atoms, that are connected by covalent (forces that gum or join things together). Water strictly refers to the liquid state of that substance, that wins at criterion the room's temperature and pressure; but it often refers also to its solid state (ice) or its gaseous state (steam or water vapor). It also happens in nature as
The amount of heat required to raise the temperature of 1 g of water by 1oC Water has a high specific heat capacity A lot of energy is required to increase the temperature of water to 1oC due to the hydrogen bonds ~ heat must be absorbed in order to break hydrogen bonds & heat is released when hydrogen bonds form.
Generally, water is understood as a neutral and transparent fluid which is found in streams, rivers, lakes and oceans from all over the world, not to mention that rain a collective source of water. Venturing in chemistry, water is a chemical compound whose formula is H2O. It composed of two elements; one oxygen element and two hydrogen element which are chemically bonded together (Mobley, 1994). Apparently, water makes the highest percentage of fluids in the bodies of living organism. As a matter of fact, there are states in which water can be available depending on temperature, and they are ice as solid water, steam as water in gaseous state and liquid water at standard temperature and pressure (Mobley, 1994). These three states are well known to co-exist on earth, having other inconsequential forms like cloud, fog and dew. Most importantly, water is known to cover 71% of the total earth’s surface, a worthy reason as to why it is very vital for all life forms (Vörösmarty, Green, & Lammers, 2000). Water distribution on earth is as follows: 1.7% is found in underground water, 1.7% in glaciers as well as ice caps, 0.001% in the atmosphere and the largest percentage being 96.5% in oceans and seas (Vörösmarty, Green, & Lammers, 2000).
Another confusing aspect to water is why hot water freezes faster than cold. There are many different conclusions to this observation, most commonly known as the Mpemba effect. One reason is that warm water evaporates rapidly, and since this is endothermic, it cools the water, making it freeze more quickly. Another theory focuses on the bonds of water, saying that hydrogen bonds bring water molecules into close contact, so the natural repulsion between the molecules causes the covalent O-H bonds to store energy. When the liquid warms, the hydrogen bonds and water molecules stretch. The covalent molecules shrink and give up their energy, so the covalent bonds giving up their energy is equivalent to a cooling process.
The most important substance in the world is water, without it there would be no world. Water is a molecule that is composed of two hydrogen atoms and one oxygen atom, also known as H2O. Water is a polar molecule, making it able to dissolve other polar molecules. Water is attracted to itself by cohesion. Cohesion is the attraction of one substance to itself. Cohesion is possible for water due to its strong hydrogen bonds. Alone hydrogen bonds are weak, but together they form one of the strongest bonds known. Water is an extremely diverse substance that can be in solid form, liquid form, and gas form. The normal temperature of water is 25oC, which produces its liquid form. When water reaches below 0oC, it freezes and becomes solid. Above100oC is when water reaches its gaseous form and boiling point; that is more than a 75o temperature change from liquid to gas. Studies show that the evaporation rate of a liquid depends on the
Ms. Hovey conducted a study on the Severn Estuary in the UK and noticed that the temperature of the water has increased. Increasing temperature of the water can result from Global Warming. As Global Warming alters temperature and weather patterns, it could have an impact on plant and animal life. Both the number and