Các cấu hình tạo nên nguyên tử?
electron, proton, neutron
Chọn nguyên tử ký hiệu sau:
Chuỗi nào sau đây bao gồm các nguyên tử có cùng 1 nguyên tố hóa học ?
rắn
Which element is represented by the letter C
Carbon
Is vinegar acidic or basic?
Acidic
What unit is used to measure mass in chemistry?
Grams
Các hạt tạo nên hạt nhân?
proton, neutron
Orbital s có hình dạng như thế nào?
Hình cầu
Which element is represented by the letter He
Helium
Which number is a neutral pH?
7
What unit is used to measure length in chemistry?
Meters
Trong nguyên tử những hạt nào mang điện?
proton, electron
What is it called when a liquid becomes a gas?
Vaporization
Which element is represented by the letter K
Potassium
is soap acidic or basic?
Basic
What unit is used to measure time in chemistry?
Second
What is the name of the positively charged particle in an element called?
Proton
What property describes how much space something is taking?
Volume
Which element is represented but the letter Fe
Iron
pH of 12 is acidic or basic?
Basic
How many milliliters are in a liter?
1,000mL
Số khối có công thức là ?
A = N + Z
What is it called when a gas turns into a liquid
Condensation
Which element is number 7 on the periodic table?
Nitrogen
On litmus paper when it comes into contact with an acid, what color will it turn?
Red
What is the unit of temperature used specifically in Chemistry?
Hint: not Fahrenheit or Celcius
Kelvin