Chemistry study guide

Nonzero numbers are always what?

• significant

• not significant

• decimals

zeros between nonzero digits are always...

• not significant

• significant

chemical symbol Al stands for which element name ?

• argon

• aluminum

• arsenic

• iron

Element names Beryllium,Iron,and chromium have which chemical symbol

• Be

• Cs

• Fe

• Cr

Chemical symbols Pb, Kr , and He are which element name ?

• copper

• krypton

• helium

• hydrogen

• lead

Zeros to the right of nonzero integers are NOT significant unless a _____ is showing

• decimal

• integer

• chemical symbol

what does chemical symbol Co stand for

Element names astatine and antimony use which chemical symbols ?

• At

• Bi

• Sb

• Ca

Element names Cesium and bismuth are which chemical symbol ?

• Ba

• Cr

• cs

• Cs

• Bi

When performing a lab hair must be...

• worn down

• however you like it

• tied up