States of Matter物質(zhì)的狀態(tài)
Matter is made of?atomsand?molecules.物質(zhì)是由原子和分子構(gòu)成的洛姑。
Water, for example, is the H2O molecule.?例如呢袱，水是H2O分子贪壳。
This means that a molecule of water has 3 atoms.?這意味著一個水分子有3個原子尝艘。
A water molecule has 2?hydrogen atoms and 1?oxygen atom.一個水分子有兩個氫原子和一個氧原子气忠。
Substances like sugar have many atoms in their molecules.?像糖這樣的物質(zhì)分子中有許多原子。
A molecule of sugar has many atoms, including carbon, hydrogen and oxygen.糖分子有許多原子旬昭，包括碳、氫和氧菌湃。
What is matter made of? atoms and molecules.物質(zhì)是由什么構(gòu)成的?原子和分子问拘。
Matter is made of molecules, such as H20, which is the water molecule.?物質(zhì)是由分子組成的，比如水分子H20惧所。
Matter can be one of three states, solid, liquid or gas.?物質(zhì)可以是三種狀態(tài)之一骤坐，固態(tài)、液態(tài)或氣態(tài)纯路。
Water and ice are the same substance, but they are in different states.?水和冰是同一種物質(zhì)或油，但它們處于不同的狀態(tài)寞忿。
These states depend on the temperature of the molecules.?這些狀態(tài)取決于分子的溫度驰唬。
When we heat a substance, the molecules move faster and try to take up more space.?當(dāng)我們加熱一種物質(zhì)時，分子運(yùn)動得更快腔彰，并試圖占據(jù)更多的空間叫编。
When we cool a substance, the molecules move more slowly.當(dāng)我們冷卻某種物質(zhì)時，分子運(yùn)動得更慢霹抛。
When we cool a substance to its freezing point, it becomes a solid.?當(dāng)我們把一種物質(zhì)冷卻到冰點(diǎn)時搓逾，它就變成固體。
What do the states of matter depend on? temperature物質(zhì)的狀態(tài)依賴于什么?溫度
In a solid, the molecules move very little.?在固體中杯拐，分子幾乎不動霞篡。
Their positions are almost fixed.?它們的位置幾乎是固定的。
To be fixed means that their positions don't change.被固定意味著他們的位置不會改變端逼。
If we heat the molecules, they move faster and away from each other.?如果我們加熱分子朗兵，它們會運(yùn)動得更快，彼此遠(yuǎn)離顶滩。
The solid begins to melt, like ice cream on a hot day.?固體開始融化余掖，就像熱天的冰淇淋。
How can we change a solid into a liquid? heat it up 我們怎樣把固體變成液體?加熱
How can we change a liquid into a solid礁鲁？cool it down 我們怎么養(yǎng)把液體變成固體盐欺？冷凍
To?change a solid into a liquid, add heat.要把固體變成液體，加熱仅醇。
At a certain temperature, the?solid begins to change into a?liquid.在一定的溫度下冗美，固體開始變成液體。
The temperature at which a solid changes into a liquid depend son the substances.?固體變成液體的溫度取決于這些物質(zhì)析二。
For water, the solid begins to change into a liquid when its temperature rises to above 0 degree Celsius.?對于水來說粉洼，當(dāng)溫度上升到0攝氏度以上時，固體就開始變成液體。
For some substances, such as steel, the temperature at which it becomes a liquid is much higher.?對于某些物質(zhì)漆改，如鋼心铃，它變成液體的溫度要高得多。
Steel often melts at around 1370?degrees Celsius.鋼通常在1370攝氏度左右熔化挫剑。
At what temperature does ice begin to melt? below 0?degrees Celsius冰在什么溫度開始融化?攝氏零度以下
If we continue to heat a liquid, the molecules move even faster.?如果我們繼續(xù)加熱液體去扣，分子運(yùn)動得更快。
At a certain temperature, the liquid begins to change into a gas.在一定的溫度下樊破，液體開始變成氣體愉棱。
For water, the liquid begins to change into a gas at 100 degrees Celsius.?對于水來說，液體在100攝氏度時開始變成氣體哲戚。
That is the?boiling point of water.這是水的沸點(diǎn)奔滑。
At what temperature does water boil??100 degrees Celsius水在什么溫度沸騰?100攝氏度
Inside a star ，such as our Sun顺少，the temperature is very high 在恒星內(nèi)部朋其，比如我們的太陽，內(nèi)部溫度是非常高的
Everything inside the Sun is a gas 太陽內(nèi)部的一切都是氣體
According to scientists脆炎， there are over 65 elements inside the Sun 根據(jù)科學(xué)家的研究梅猿，太陽里有超過65種物質(zhì)
These include oxygen and iron 其中包含氧氣和鐵元素
Over 90 percent of the Sun is hydrogen gas?太陽的90%以上是氫氣
what’s the temperature inside the star？the temperature is very high?恒星內(nèi)部的溫度是多少?溫度非常高
