Sig. Figs., Uncertainty, and Unit Conversions
The presence of _______ makes ending zeros significant.
What is a decimal?
Its chemical formula is Na2S
What is sodium sulphide?
What is a physical change?
What is an element?
Your student teacher (first and last name)
Who is Esther Woo?
The reading and uncertainty of Exhibit A
What is (15.5-17.0) +/- 1.5 cm ?
The name of this compound is zinc nitrate
What is Zn(NO3)2 ?
Baking a birthday cake
What is a chemical change?
(pure) air
What is a homogenous mixture?
The maple leaf on the Canadian flag has this many points
What is 11?
The number of significant digits in the answer to the following equation:
(4.093 +6.3)/4.522
What is 3?
The language that prefixes used in naming hydrates come from
What is Greek?
Heating sugar to form caramel.
What is a chemical change?
Italian salad dressing
What is a hetergenous mixture?
It's Latin name is 'stannum'
What is tin?
Convert 340.800 cm/ks to hm/das. Express your answer in scientific notation.
What is 3.40800*10-4 hm/das?
The name of this compound is plumbic phosphite
Pb3(PO3)4
Sugar added to coffee
What is a physical change?
Nitrogen gas
What is a compound?
The name for little Roman numeral
(ex. iv)
What is romanette?
Choose the measurement with the greater absolute uncertainty:
i. (6.93 +/- 0.05)*103 cm
ii. 7.4 +/- 0.5 m
What is neither?
CH3COOH is the chemical formula for this common household item
What is vinegar?
Name three signs of a chemical change
What is
change in colour / odor / pH / temperature,
formation of gas / precipitate / light
What is a heterogenous mixture?
Write the solution in square decametres, to the correct number of sig. figs.
(7.210*106 cm x 460 dm2)/
(0.6839 km + 532 cm - 7.12*102 mm)
What is 4.8 dam2 ?