Grade

Type of questions

Science Junior High

(6)・(7)・(8)・(10)を教えて欲しいです!

|2 図2のようにマグネシウムと銅の粉末をそれぞれステンレス 皿に入れ,すべての金属と酸素が反応するまでガスパーナーで 加熱をし,よく冷やしてから質量をはかった。その実験を両方 の金属で質量を変えながら繰り返した。そのときのそれぞれの 金属の質量と加熱後の物質の質量の関係を表2のグラフに示し た。また,図3は実験で使用したガスバーナーを点火したとき の図を表したものである。以下の問いに答えなさい。 金属の粉末 「ステンレス皿 新した ゴム 図2 全1)a, bのねじの名称を答えなさい。 2)点火するときに最初に回すねじはaとbのどちら か記号で答えなさい。 資3)炎が図3の状態のとき、 どちらのネジをXとYの どちらの方向に回せばよいかそれぞれ記号で答えなさ 拡大図 つ表1の 10cm程度の 「赤色の炎 い。 4)物質が酸素と結びつく反応を何というか答えなさ 図3 い。 資5)マグネシウム Mg が酸素 Oz と結びついて酸化マグネシウ ム MgO を生成するときの化学反応式を答えなさい。 ※6)マグネシウム 0.9gと結びつく酸素の質量は何gか答えな さい。 資7)マグネシウムと酸素の結びつくときの質量比をア~エの 中から選び記号で答えなさい。 ア5:3 ※8)銅1.2g と結びっく酸素の質量は何gか答えなさい。 夜9)銅と銅の酸化物の質量比を(7)の~国の中から選び記 号で答えなさい。 10) 銅の酸化物2.0g 中に含まれる銅と酸素の質量はそれぞれ何gか答えなさい。 2.7 2.4 2.1 マグネシウム 1.8 物 1.5 銅 0.9 なさ 0.6 4:5 国4:1 ウ3:2 0.3 司のどち 0 0.3 0.6 0.9 1.2 1.5 金属の質量[g) 表2 式のx -しなさ dNd- 酸化物の質量(g]

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English Junior High

これの5の答えはイだったんですけどなんでそうなるのか解説をお願いします。

次の左利き(left-handed)と右利き (right-handed) についての英文を読んで, 1~5の問いに答え なさい。 =~する可能性が高い rate (s) =割合 serious injuries =重傷 (注)life span (s) 3D寿命 feel down = 落ち込む be likely to ~= data = データ allergies = アレルギー advantage = 有利な点 academic success = 学問的な成功 president (s) =大統領 Are you left-handed or right-handed? Do you use your right hand or left hand when you do some activities? In this world, some people usually use their right hand, and others use their left hand. Is there any difference between these people? Some scientists) have discovered an interesting fact, about the life span of left-handed people and right-handed people. They. say that left-handed people have a shorter life span than right-handed people. This idea comes from Da study in 1991 It showed that the population of left-handed people becomes smaller with age. The scientists said that left-handed people live in ② a world for right handed people. Some things, such as a knife, a guitar, a baseball glove, and a keyboardof personal Computers, are made for right-handed people. Left-handed people are more likely to have trouble using those things, and have-accidents and serious injuries.. In 1992, one scientist, that the life spans of left-handed people are about nine years shorter than those of right-handed people. Were left-handed people given a bad hand? If you are a left-handed person, don't feel down. In 2000, a scientist showed that ④ Coren's idea was not. true. Here is the reason: some elderly right-handed people started as left-handed people, but their parents and teachers changed them into right-handed when they were children. That means many of left-handed people died as right-handed. Like this, there are some questions about Coren's data, so we cannot say that left-handed people have a shorter life span. Also, other studies showed that the life spans of right-handed people and left-handed people are not so different. Stanley Coren, said that these make their life spans shorter. He found Still, some people say that there are some bad points in being left-handed. Because they live in a world for right-handed people, left-handed people may have higher rates of some diseases such as mental disease,and allergies. However, we can also find a lot of good points in being left-handed. They have an advantage in sports like_tennis and baseball. Also, they are likely to have more academic success and higher IQs. Five of America's last eleven presidents were left-handed people, though ( 6 11人の5人

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