“Zn” is a...

Chemicals Formula

Symbol

Name

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line