P.131. What are the differences between compound and mixture?
C.131. Differences between compound and mixture
Compounds consist of the same kind of molecules, and mixtures consist of different kinds of atoms or molecules.
The compound is combined by chemical means and the mixtures are separated by physical means.
While the atoms in the compound combine in certain mass ratios, there is no specific ratio for mixtures.
While the compounds have a fixed density, the density of the mixtures varies depending on the combination rates of the substances in the mixture.
P.132. What does molecule mean?
C.132. Molecule: The smallest indivisible part of a compound that has all the properties.
P.133. What does titration mean?
C.133. Titration: Generally, to determine the concentration of a solution, it is the addition of a certain amount of another solution of known concentration to that solution. Titration is the technique of determining the concentration of an unknown solution that reacts with a solution of known concentration in acid-base, complex formation, precipitation or redox reactions, based on the reaction occurring. This process is done in the titration device.
Q.134. What does solution mean, explain with an example?
C.134. A solution is formed when one or more substances are homogeneously dispersed in the other substance.
When we throw a cube of sugar or granulated sugar into water and mix it, the sugar gradually disappears. As can be understood from the taste of sugary water, the scavenger has not disappeared and is homogeneously dispersed in the water. This is colloquially known as the melting of sugar. However, this is different from melting fat or iron. In science, melting is a term that indicates the transition of a solid from a solid to a liquid state under the influence of heat. Here, a new substance (sugar water) is formed from two different substances. In scientific language, this is called "sugar dissolved".
Q.135. What does meltdown mean in science?
C.135. In science, melting is a term that indicates the transition of a solid from a solid to a liquid state under the influence of heat.
P.136. How many components are there in a solution?
C.136. There are at least two components in a solution.
Q.137. What does solvent mean?
C.137. The substance present in excess in the solution is called the solvent.
P.138. What does the solvent determine the solution?
C.138. The solvent also determines the state of the solution (solid, liquid, gas).
Q.139. What does solute mean?
C.139. The lesser substance in the mixture is called the solute.
Q.140. What does solution mean?
C.140. Homogeneous mixtures of solvent and solute solution is called. A solution is formed when one or more substances are homogeneously dispersed in the other substance.
Q.141. What is the property of the new substance formed as a result of the solutions?
C.141. Solutions create new substances that have the properties of their constituent substances or their own properties.
Q.142. What does resolution mean, explain with an example?
C.142. The ability of a substance to dissolve more or less in a solvent resolution It called.
What are impacted teeth?
When one or more teeth fails to grow in the correct position and is therefore held below the normal gum line, it is called an impaction. This can be complete, such as completely unerrupted (buried) third molars (wisdom teeth) or partial when just part of the tooth is visible in the mouth.
Why are impactions important?
For best function and appearance the teeth should grow in a healthy alignment. When one or more teeth is impacted, this can affect the function of that tooth but also the function and appearance of other teeth.
Whether all impactions should be treated is still controversial and your dentist and oral and maxillofacial team can explain the advantages and disadvantages or treatment for you, which is usually surgical.
Dissolution is based on the force of attraction between molecules. In order for a solvent to dissolve a substance, the attractive forces between the solvent and solute molecules must be greater than the attractive force between the solvent and the solute's own molecules. For example, the dissolution of sugar in water is because the attractive force between sugar and water molecules is greater than the attraction between the sugar molecules themselves. Sugar dissolves in water in molecular form without dissociating into its ions.
P.143. What do non-electrolytes mean?
C.143. A solution without charged particles does not conduct electricity. solute that forms such electrically conductive solutions Substances are called non-electrolytes.
Q.144. What does electrolyte substance mean?
C.144. Substances that form (+) and (-) charged particles in the solution are called electrolytes.
P.145. What are the factors that affect both the solubility and solubility rate of a substance?
C.145. There are factors that affect both the solubility of a substance and its rate of solubility. These; solvent and type of solute, temperature and pressure.
P.146. What does the solute in powder form accelerate and what does not increase the solute?
C.146. The fact that the solute is in powder form will increase the surface of the solute in contact with the solvent, thus accelerating the dissolution. But it does not increase the amount of resolution
Q.147. What state of matter do gases give in water?
C.147. Gases give off heat when dissolved in water.
P.148. What is the ratio of solubility to temperature of gases?
C.148. The solubility of gases is inversely proportional to temperature. That is, the solubility of gases decreases as the temperature increases, and increases as the temperature decreases.
P.149. What does the solubility of liquids show with temperature?
C.149. The solubility of liquids varies with temperature. If the boiling point of the solute is higher than the boiling point of the solvent, the solubility increases with increasing temperature. If the boiling point of the solute is lower than the boiling point of the solvent, the solubility decreases with increasing temperature.
P.150. What is the effect of pressure on the solubility of solid and liquid gases?
C.150. Pressure has little or no effect on the solubility of solids and liquids. However, the solubility of gases increases with increasing pressure.
P.151. Classify solvents and solutes according to their physical states.
C.151.
A-Solid-liquid solutions
B- Liquid-liquid solutions
C-Solid-solid solutions
Ç-Gas-gas solutions
D-Gas-liquid solutions
P.152. What does solid-liquid solutions mean, give an example?
C.152. Solid-liquid solutions: They are solutions formed by the homogeneous dissolution of a solid in a liquid (salt water, sugar water).
P.153. What does liquid-liquid solutions mean, give an example?
C.153. Liquid-liquid solutions: They are solutions formed by the homogeneous dissolution of a liquid in another liquid (alcohol + water = cologne).
P.154. What does solid-solid solutions mean, give an example?
C.154. Solid-solid solutions: They are solutions formed by the homogeneous dissolution of a solid in another solid.
P.155. What does gas-gas solutions mean, give an example?
C.155. Gas-gas solutions: They are solutions formed by at least two gas mixtures (oxygen+nitrogen=air). All gas mixtures are homogeneous.
S.156. What does gas-liquid solutions mean, give an example?
C.156. Gas-liquid solutions: They are solutions formed by the homogeneous dissolution of a gas in a liquid (beverages such as cola, soda).
P.157. Classify solutions according to their conduction of electric current.
C.157.
A-Electrically conductive solutions (electrolyte)
B-Non-conductive solutions (non-electrolyte)
Q.158. Classify solutions according to the amount and solubility of the components?
C.158.
A-Saturated solution
B-Unsaturated solution
C-Supersaturated solution.
P.159. What does saturated solution mean, explain?
C.159. The amount of solute that the solvent can dissolve is the solutions it contains. It is the solution that has dissolved the maximum amount of substance it can dissolve. Even if the solute is added to the saturated solution, the added substances do not dissolve, they precipitate.
P.160. What does unsaturated solution mean, explain?
C.161. If a substance is dissolved below the saturation level in a solution, it is called an unsaturated solution. It is a solution that has not dissolved the maximum substance it can dissolve.
P.162. What does supersaturated solution mean, explain?
C.162. If a substance is dissolved above the saturation amount in a solution, it is called a supersaturated solution. The solvent dissolved more substance than it could. Supersaturated solutions are very unstable. With the addition of a tiny solute crystal into the solution, it quickly precipitates and becomes a saturated solution. Sometimes the sweetening of the jam is due to the fact that it is a supersaturated solution.
S.163. What are the types of solutions according to their concentrations?
C.163.
A-Diluted solution
B-Concentrated solution
S.164.Explain what volume-by-mass percent solutions mean?
C.164.100 volume units of solution indicates how many weight units of solute are in the solution. Milliliter, liter, cubic meter etc. it could be. For example, 20% by volume - mass sodium chloride solution means that there are 100 g of sodium chloride in 20 ml of sodium chloride solution. Here, the amount of solution should be expressed in units of volume and the amount of solute in units of weight. The total weight of the solution is equal to the weight of the solute and the weight of the solvent.
S.165.Explain what volume percent solutions mean?
C.165.100 volume units (ml, Ɩ, m³, etc.) shows how many volume units of solute are in the solution. It shows how many ml of solute are in 100 ml of solution. Milliliter, liter, cubic meter etc. it could be. For example, 20% by volume lik alcohol solution means that there is 100 ml of pure alcohol in 20 ml of alcohol solution. or 100 Ɩ It means that there is 20 ml of pure alcohol in the alcohol solution. Here, the amounts of solute and solution are expressed in units of volume.
P.166. What does dilute solution mean?
C.166. They are solutions containing a small amount of solute.
p.167. What does concentrated solution mean?
C.167. They are solutions containing large amounts of solutes.
Q.168. What does my concentration mean?
C.168. The amount of solute dissolved in some solution or solvent is called concentration.
P.169. The state of the solvent is solid. The state of the solute is solid. Give an example of this?
C.169. Solder (lead and tin dissolution)
P.170. The state of the solvent is solid The state of the solute is liquid. Give an example of this?
C.170. Amalgam (dissolution of silver and mercury)
P.171. The state of the solvent is solid The state of the solute is gas. Give an example of this?
C.171. Dissolution of hydrogen gas in palladium.
P.172. The state of the solvent is liquid The state of the solute is solid. Give an example of this?
C.172. Dissolving sugar in water
P.173. The state of the solvent is liquid The state of the solute is liquid. Give an example of this?
C.173. Dissolution of alcohol in water
Q.174. The state of the solvent is liquid The state of the solute is gas. Give an example of this?
C.174. Dissolution of oxygen in water
P.175. The state of the solvent is Gas The state of the solute is solid. Give an example of this?
C.175. Iodine dissolution in nitrogen
P.176. The state of the solvent is Gas. The state of the solute is liquid. Give an example of this?
C.176. Water dissolution in nitrogen (humid air)
P.177. The state of the solvent is Gas The state of the solute is gas. Give an example of this?
C.177. Air (dissolution of oxygen in nitrogen)
Q.178. What does alloy mean, explain and give an example?
C.178. Solid solutions are homogeneous solid mixtures formed by melting two or more metals. To these alloy It called.
What are impacted teeth?
When one or more teeth fails to grow in the correct position and is therefore held below the normal gum line, it is called an impaction. This can be complete, such as completely unerrupted (buried) third molars (wisdom teeth) or partial when just part of the tooth is visible in the mouth.
Why are impactions important?
For best function and appearance the teeth should grow in a healthy alignment. When one or more teeth is impacted, this can affect the function of that tooth but also the function and appearance of other teeth.
Whether all impactions should be treated is still controversial and your dentist and oral and maxillofacial team can explain the advantages and disadvantages or treatment for you, which is usually surgical.
In alloys, atoms of one metal enter into the crystal structure of the other metal and form a homogeneous mixture. For example, stainless steel (76% Fe, 16% Cr, 8% Ni), brass (60% Cu, 40% Zn), bronze (80% Cu, 15% Sn, 5% Zn) are alloys. Gas solutions are homogeneous when two or more gases are placed in the same container. formed by mixing. For example, air is a gas solution
P.179. How to express the amount of solute in a solution?
C.179. The amount of solute dissolved in a solution is expressed in various concentration units that include the terms mass, volume, and mole. The most commonly used concentration units are percent concentration, mole fraction, molarity, normality, molality, ppm and ppb. This is the concentration unit; Since it is used in different meanings, it is clearly stated in terms such as weight, volume or weight volume.
P.180. Explain what is percent solution by mass?
C.180. 100 weight units indicates how many weight units of solute are in the solution. As units, grams, kilograms, milligrams, tons, etc. it could be. For example, 20% by mass sodium chloride solution means that 100 g of sodium chloride solution contains 20 g of solid sodium chloride. Such a solution can be prepared by dissolving 20 g of NaCl in 80 g of pure water. This means that there are 100 tons of solid sodium chloride in 20 tons of sodium chloride solution. Here, the amount of solute and solution is expressed in units of weight.
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