
ÔN TẬP CHỦ ĐỀ 2 KHTN7
Flashcard
•
Chemistry
•
7th Grade
•
Practice Problem
•
Hard
Wayground Content
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18 questions
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1.
FLASHCARD QUESTION
Front
Đơn chất là chất tạo nên từ
Back
một nguyên tố hoá học.
2.
FLASHCARD QUESTION
Front
Số loại nguyên tố tối thiểu để tạo thành phân tử hợp chất?
Back
2 nguyên tố.
3.
FLASHCARD QUESTION
Front
Phân biệt phân tử đơn chất với hợp chất dựa vào dấu hiệu nào?
Back
Nguyên tử cùng loại hay khác loại.
4.
FLASHCARD QUESTION
Front
Chất nào là đơn chất?
Back
Than chì do nguyên tố C tạo nên.
5.
FLASHCARD QUESTION
Front
Chất thuộc loại hợp chất:
Back
Nước
6.
FLASHCARD QUESTION
Front
Nguyên tử của các nguyên tố khác khí hiếm tham gia liên kết hóa học để lớp electron ngoài cùng đạt
Back
8 electron.
7.
FLASHCARD QUESTION
Front
Nguyên tử kim loại nhường electron sẽ trở thành
Back
Ion dương.
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