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化学 高校生

読みましたが、全体的に理解出来ません。英語で理解出来なかったので多分、全文和訳しても理解出来ません。 なので、この写真に載っていることを分かりやすく教えていただきたいです🙇🏻‍♀️

Free energy changes determine if a reaction is endothermic or exothermic. Processes in nature are driven in two directions: toward least MAIN IDEA enthalpy and toward greatest entropy. When these two oppose each other, the dominant factor determines th direction of change. As a way to predict which factor will dominate fora given system, a function has been defined to relate the enthalpy and entropy factors at a given temperature tropy and constant pressure. This combined enthalpy-entropy function is callepd t free energy, G, of the system; it is also called Gibbs free energy. This function simultaneously assesses the tendencies for enthalpy and entropy to change. Natural processes proceed in the direction that lowersthefree energy of a system. Only the change in free energy can be measured. It can be defined in terms of changes in enthalpy and entropy. At a constant pressure and temperature, the free-energy change, AG, of a system is defined as the difference between the change in enthalpy, AH, and the product of the Kelvin temperature and the entropy change, which is defined as TAS. Free Energy Change AGO= AH°- TASO Note that this expression is for substances in their standard states. The product TAS and the quantities AG and AHhave the same umor usually kJ. The units of AS for use in this equation are usually N If AG<0, the reaction is spontaneous. AH and AS in the free-energy equation can have positive or negative values. This leads to four possible combinations of terms.

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化学 高校生

波線部の「塩化ナトリウムのように分子とよべるユニットが見当たらないような物質」とはどういうことでしょうか。

STAGE 3分子量と式量 の別冊 p.5~7 o 物質の元素構成を元素記号で表したものを化学式といいます。 原子が特定の chemical forimula みんし ぶんし 比率で結合してできた複合的な粒子を分子といい, 分子を表した化学式を分子 molecule molecular formula しき 式といいます。 例えば、水という物質を構成している基本粒子は, 水素原子2つと酸素原子 1つが集まってできた水分子で,分子式では H.O と表します。 『H.O』と書く 拡大 1は省略 また,ダイヤモンドのような超巨大分子や,塩化大トリウムのように分子と よべるユニットが見当たらないような物質を化学式で表す場合は, 一般に元素 の組成を最も簡単な整数比で表します。 これは組成式とよばれています。 そ せいしき Compositional formula ダイヤモンドは炭素1つ, 塩化ナトリウムはナトリウムと塩素1つずつで, 最も簡単な物質の組成単位なので, 次のように表します。 拡大 『C』と書く ダイヤモンド 拡大 『NaCl』と書く 塩化ナトリウム の結晶 原子量の値を用いて, 分子1個の相対質量や組成式1単位分の相対質量を表 したものを化学式量といい, 前者を分子量, 後者を式量といいます。 ぶん しりょう しきりょう molecular weight formula weight chemical formula weight 03 物質量 21

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英語 中学生

左が本文です  右が問題です この問題教えてください!!!

D回 日 時間 25分 実力問題 Step(3 次の英文を読んで、あとの問いに答えなさい。 Agriculture is very important. We have( A) many kinds of things, such as rice, fruits and vegetables, for a long time. Through agriculture, a lot of foods are produced, so we are able to have food every day. Agriculture is necessary for our lives in many ways. In Japan, today, more and more people are thinking about agriculture. One of the reasons is the safety of food. Some people ask, “Does this carrot come from our local area?” or “Is this cabbage s produced with agricultural chemicals?" Some people like to buy fruits and vegetables produced near their homes. It is called chisamatia in Japanese. This means “to consume the farm products in the area that has produced them” In the United States, they have the movement called Community Supported Agriculture (CSA) People give some money to the farmers ( B ) in their local area, and get fruits or vegetables from 1n them. In other words, consumers support the farmers in their own community. Chisanchisho and CSA have some good points for people. First, consumers know which farm the fruits and vegetables come from. Second, the fruits and vegetables are fresh and taste delicious because they are carried for a short time from farms to stores. In addition, consumers can choose the farmers who don't use agricultural chemicals. OSo (a chance for / give consumers / can / 15 getting better / of movements / these kinds) products. Farmers are also careful about the safety of food. Agricultural chemicals are used to protect fruits and vegetables from insect pests, but using agricultural chemicals too much is sometimes bad for people. So, some farmers are trying to produce fruits and vegetables( 2 ) agricultural chemicals. Instead of agricultural chemicals, they use some kinds of insects. 20 Plant lice are insect pests for vegetables. If farmers do not do anything, many vegetables wIll De eaten by them. So some farmers use ladybugs. Ladybugs like to eat plant lice. So the farmers nope that ladybugs will eat many plant lice. As a result, they don't use any agricultural chemicals. Through agriculture, we can get many foods from nature. So agriculture is necessary for our I When we think of our future, we should be more careful about our foods to improve our lives. 医 語句 agriculture 農業 chisanchisho 地産地消 fresh 新鮮な plant lice plant louse (アプラムシ)の複数形 vegetable 野菜 local 地元の agricultural chemicals 農薬 Community 地域社会 consume 消費する protect~~を守る insect pest 害虫 Consumer 消費者 insect 昆虫 ladybug テントゥムシ

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