1.쉬움
What does the law of conservation of mass state?
- AThe mass of products is always greater than the mass of reactants
- BMass is lost as heat in every reaction
- CGases have no mass
- DMass is neither created nor destroyed in a chemical reaction
What does the law of conservation of mass state?
Which group of biological molecules includes fats, oils and cholesterol?
입자들이 일정한 모양과 일정한 부피를 가지는 물질의 상태는 무엇인가요?
What is the shape of a water molecule?
How does electronegativity change going down a group?
칼슘(Ca²⁺)과 염소(Cl⁻)로 만들어지는 화합물은 무엇인가요?
Carbon-12 and carbon-14 react in exactly the same way in chemical reactions. Why?
용액의 pH가 6에서 4로 변했습니다. 수소 이온 농도는 어떻게 되었나요?
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