Q.1.
How many carbon atom/s are present in the compounds CaCO3?
Q.2.
Is water an element or a compound?
Q.3.
Element is a
Q.4.
Is salt (NaCI) a compound or a element
Q.5.
Which one can be found on the periodic table
Q.6.
Which of the following represents an element?
Q.7.
What is the formula for sulfur pentoxide?
Q.8.
What is the formula for Sodium Nitrate? (refer to your polyatomic ions sheet)
Q.9.
What is the formula for Silicon dioxide?
Q.10.
What is the name for MgH2?
Q.11.
What is the name for CO?
Q.12.
What is the formula for Lithium Iodide?
Q.13.
Rust & Tarnishing is ALWAYS and example of a chemical change/reaction?
Q.14.
Which combination of letters could be used as a chemical symbol for an element?
Q.15.
How many Capital or Uppercase letters can one element have?
Q.16.
CO2 , + H2O, + C6H12O+ O2Which of the following is a Compound?
Q.17.
What is a chemical property associated with wood?
Q.18.
CaCO3 heat CaO + CO2 The products above are best classified as -
Q.19.
Carbon (C) is considered an element while Carbon Dioxide (COis considered a compound. That is because Carbon Dioxide is -
Q.20.
Which of the following is NOT evidence of a chemical reaction?