6 3 Naming Compounds
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This document discusses naming ionic and covalent compounds. For ionic compounds, the metal is named first as it appears on the periodic table and the nonmetal is named second with the suffix -ide added. Some transition metals indicate their charge with Roman numerals. Covalent compounds are bonds between two nonmetals and use prefixes from a table to name the compound based on subscripts, with the element name and -ide suffix.
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Scientific notation and SI units are used in measurement to help scientists communicate measurements clearly across countries. The basic SI units include meters, kilograms, seconds, amperes, moles, candelas, and kelvins. Derived units are calculated from the basic units, such as newtons from kilograms and meters/seconds. SI prefixes modify the scale of units, from centi to giga. The precision of calculations is limited by the measurement with the fewest significant figures. Temperature in kelvins is calculated by adding 273 to degrees Celsius.
1.2 notes
The document outlines the scientific method which involves making observations, conducting research to form a hypothesis, testing the hypothesis through controlled experiments and data collection, drawing a conclusion, and potentially developing a new theory. It also discusses key aspects of the scientific method including forming testable hypotheses with manipulated and responding variables, controlling outside factors, revising hypotheses not supported by evidence, and how scientific laws summarize patterns in nature while theories aim to explain them and cannot be proven. Scientific models are also mentioned as helping visualize complex concepts.
Ch 1 1 notes
Science begins with curiosity and uses methods to discover knowledge. It includes natural sciences like physical science, chemistry, physics, earth and space science, as well as life sciences concerning living things. Physical science covers big ideas like space and time, matter and change, forces and motion, and energy.
Ch 26-1 The sun
The document summarizes key aspects of energy from the sun and its atmospheric features. The sun's energy comes from nuclear fusion reactions in its core that convert hydrogen into helium. This outward pressure is balanced by the sun's inward gravitational force, maintaining stability. The sun's atmosphere has three layers - the visible photosphere, the middle chromosphere, and the outer corona containing hot gases that flow out as solar winds. Sunspots, prominences, and solar flares are prominent atmospheric features.
Groups of stars 26.4
Star systems consist of two or more stars held together by gravity, with over half of all stars existing in systems. Star clusters form when stars are born together in the same nebula, allowing their ages to be determined. The three types of star clusters are open clusters, associations, and globular clusters. Galaxies are classified into four main categories: spiral, barred-spiral, elliptical, and irregular galaxies, which can be distinguished by their shapes, presence of spiral arms, and stages of star formation.
Evolution of a star 26 3
Stars form from dense regions in nebulae where dust and gases heat up and contract to form a protostar with enough mass for nuclear fusion to begin. Most stars will spend around 90% of their life as a main sequence star stably fusing hydrogen into helium. A star's mass determines its place on the main sequence, with smaller, cooler red stars living the longest. Lower mass stars eventually become white dwarfs as their cores grow without outward pressure, while higher mass stars explode as supernovae, leaving behind neutron stars or black holes if the core is massive enough for its surface gravity to trap even light.
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
ここ3000字までしか入らないけどタイトルの方がたくさん文字入ると思います。
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みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
みなさんこんにちはこれ何文字まで入るの？40文字以下不可とか本当に意味わからないけどこれ限界文字数書いてないからマジでやばい文字数いけるんじゃないの？えこ...
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6 3 Naming Compounds
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