chemistry

1:WHAT IS A WATER MOLECULE COMPOSED OF?

• A 2Hydrogen atoms and 1 Oxygen atom

• B 1Hydrogen atom and 2 Oxygen atomsv

• C 3Oxygen atoms

• D 2Helium atoms and 1 Oxygen atom

2.WHAT PROPERTY OF WATER ALLOWS IT TO BE SUCH A VERSATILE SOLVENT THAT IT IS OFTEN CALLED THE "UNIVERSAL SOLVENT?"

• HIGH HEAT CAPACITY

• POLARITY AND HIGH SURFACE TENSION

• EXPANSION UPON FREEZING

• PURITY

3.WHY CAN WATER HAVE NO NET CHARGE BUT HAVE SLIGHT CHARGES IN DIFFERENT PARTS OF THE MOLECULE

• THE HYDROGEN AND OXYGEN ENDS CHANGE IN POLARITY

• THE HYDROGEN END IS SLIGHTLY NEGATIVE AND THE OXYGEN END IS SLIGHTLY POSITIVE

• BECAUSE IT IS HYDROPHOBIC

• THE OXYGEN END IS SLIGHTLY NEGATIVE AND THE HYDROGEN END IS SLIGHTLY POSITIVE

4.WHY DOES WATER HAVE A HIGH SURFACE TENSION

• HYDROGEN BONDS BETWEEN MOLECULES

• HIGH KINETIC ENERGY OF MOLECULES

• STRONG COVALENT BONDS IN WATER MOLECULES

• LONDON DISPERSION FORCES BETWEEN WATER MOLECULES

5.WHY IS ICE LESS DENSE

• HYDROGEN BONDS IN WATER ARE STRONG FORCES THAT DONT LET THE WATER MOVE

• HYDROGE N BONDS IN ICE CREATES A LESS DENSE HEXAGONAL STRUCTURE

• WATER MOLECULES MOVE TOO FAST TO GET INTO AN ARRANGEMENT IN ICE

• HYDROGEN BONDS IN ICE CREATES A MORE DENSE HEXAGONAL STRUCTURE

6.WHY IS WATER THE “UNIVERSAL SOLVENT

• IT CAN DISSOLVE THE MOST AMOUNT OF SOLUTES

• IT CAN NOT DISSOLVE POLAR SOLUTES

• IT CAN ONLY DISSOLVES A FEW SOLUTES

• IT DISSOLVES MANY SOLUTES

ATTRACTIONS BETWEEN WATER MOLECULES ARE CALLED

• HYDROGEN BONDS

• POLAR BONDS

• COVALENT BONDS

• IONIC BONDS

8.A SOLUTION IS A KIND OF ________.

• HETEROGENEOUS MIXTURE

• ELEMENT

• COMPOUND

• HOMOGENEOUS MIXTURE

9. THIS IS THE PART OF A SOLUTION THAT DISSOLVES

• SOLVENT

• MIXTURE

• SOLUTE

• SOLUTION

10. WHAT IS A SOLVENT?

• THE SUBSTANCE THAT IS BEING DISSOLVED IN A SOLUTION.

• THE MIXING OF DIFFERENT SUBSTANCES

• THE SUBSTANCE THAT DOES THE DISSOLVING IN A SOLUTION.

• THE PROCESS IN WHICH NEUTRAL MOLECULES LOSE OR GAIN ELECTRONS