Chemistry

Sig Digits

100

How many significant digits? 4.28

3 Significant Digits

200

Answer the following 18.21 + 6.2 =

24.4

300

Answer the following 80.24 - 54.3

25.9

400

Answer the following 14.25 X 12.3

175

500

Answer the Following 78 / 56.2

1.4

Matter

100

What is matter?

Anything that has mass and occupies space.

200

What is a physical and chemical change?

Physical change is changes that affect the physical appearance but not changing its composition Chemical change is basically changing its composition as well

300

Name two type of matter

Mixture and Pure substance

400

Which can be broken down? Element or Compound

Compound

500

Is this a physical or Chemical change? Mixture of gravel + road salt is separated by adding water

Physical

Chemical

100

Two types of chemical compound is?

Ionic and convent

200

What is Electronegativity

Measure of an atom's ability to attract electron in a chemical bond

300

What is the scale of Electronegativity to differ between ionic, polar convalent and pure convalent

Ionic 1.8 - 3.3 Polar convalent - 0.6 - 1.7 Pure convalent - 0 - 0.5

400

What is the compound? (NH4)2 CO4

Ammonium percarbonate

500

Name 4 multivalent Ionic Compounds

Copper Mercury Lead Cobalt Zinc Tin Iron Nickel

Chemical Equation

100

What is two types of chemical Equations?

Word equation and Chemical formula

200

Name 5 diatomic elements (only the one with 2)

Hydrogen (H2) Nitrogen (N2) Oxygen (O2) Fluorine (F2) Chlorine (Cl2) Iodine (I2) Bromine (Br2)

300

What is the law of conservation of mass?

Reactant mass = Products mass

400

Answer the following C02 + CaO

CaCo3

500

Answer the following SO2 + O2

SO3

Mass moles and molar mass

100

What is mole?

Amount of substance that contains as many elementary entites

200

How many atoms contained in 0.21 moles of Mg(NO3)2?

1.2 x 10^24

300

Moles in 39.2g of SO2

0.612 moles

400

100g of Mg with 0.2 moles Find Molar mass

What is 500 g/mol

500

Find mass H20 with 0.13 moles

2.3g