1) What are the postive particles in the atoms? a) Protons b) Electrons c) Neutrons 2) What is the particle that has no charge? a) Electron b) Nuetron c) Proton 3) Which of the following is made of 1 type of atoms? a) Atoms b) Element c) Molecule 4) Is water H2O an element? a) True b) False 5) Which of the following is an element? a) Gold b) Juice c) Hydrogen Chloride 6) The smallest unit of an element? a) Atom b) Molecule c) Compound 7) Can an element be separated? a) True b) False 8) How many elements do we have? a) 118 b) 200 c) 18 d) Unknown

Atoms and elements

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?