A. balance B. thermometer C. graduated cylinder D. test tube 相关知识点: 试题来源: 解析 A。A 选项 balance 是天平,用于测量化学物质的质量;B 选项 thermometer 是温度计;C 选项 graduated cylinder 是量筒,用于测量液体体积;D 选项 test tube 是试管。反馈...
A. Balance B. Scale C. Graduated cylinder D. Test tube 相关知识点: 试题来源: 解析 A。解析:Balance 天平用于测量化学物质的质量。Scale 一般指秤,在实验室较少用;Graduated cylinder 是测量液体体积的;Test tube 试管是反应容器等。反馈 收藏
counter for radioisot counter ics counter knob counter mass counter performing ma counter plateaucounte counter pre ure turbi counter roll counter sunk flat hea counter type counter type supercon counter-balance momen counter-current class counter-offerandaccep counter-regulatoryeff counter-riposte-retur...
If something is a physical property, it is possible to measure the property through observation that does not irreversibly changing the material that has the property. Chemical properties, on the other hand, are attributes of a substance that allow for a chemical change, often irreversible. They ...
CMBChemical Mass Balance CMBCasa da Moeda do Brasil CMBChase-Manhattan Bank CMBCommunity Mail Box(various locations) CMBCash Management Bill CMBCrédit Mutuel de Bretagne(French bank) CMBCentre Marc Bloch(French Ministry of Foreign and European Affairs social science research institute; Berlin, Germany...
In a chemical reaction, the total mass of the reactants is equal to the total mass of the ___. A. products B. catalysts C. solvents D. reagents 相关知识点: 试题来源: 解析 A。在化学反应中,反应物的总质量等于产物的总质量,“products”是产物,“catalysts”是催化剂,“solvents”是溶剂,...
When a substance undergoes a chemical reaction and the mass of the reactants is greater than the mass of the products, what can be concluded? A. Some matter was destroyed. B. Some matter was created. C. Some matter was converted into energy. D. Some matter was lost as gas. 相关知识...
Chemistry is the study of matter and how it changes. Matter is everything that has mass and takes up space, like the air we breathe, the water we drink, and the objects we use every day. Chemistry helps us understand what things are made of and how they interact with each other. ...
By day 30, the normalized Ca and P content, as well as the Ca/P ratio, were virtually unchanged, with a simultaneous increase in the mass concentration of Ca in the samples (Figure 1D). These dynamics allow us to hypothesize that in the first 10 days, calcium phosphate nucleation and ...
What is Mass? Mass is a fundamental property of matter because it aids in the understanding of how objects behave by defining the amount of matter that makes up an object. The kilogram (kg) is the mass unit approved by the International System of Units or SI. However, the gram (g) is...