chemistry

chemistry 1

100

• How many electrons can occupy an s orbital?

2

200

• What Is the Periodic Table?

organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number.

300

What Is an Alloy?

a metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion.

400

What is the element represented by the symbol Sr?

STRONTIUM

500

Which of the following pairs do NOT show similar chemical properties?

w) fluorine-argon

x) beryllium-aluminum

y) boron-silicon

z) lithium-magnesium

FLUORINE-ARGON

chemistry 2

100

What is the common oxidation state of Radium?

+2

200

When water and an active metal react, what are the tw products that result?

: HYDROGEN AND A BASE (HYDROXIDE)

300

Ammonia can be considered a Lewis base because it can donate

electrons

400

Excluding Astatine, which halogen does NOT replace the other halogens from their compounds?

IODINE

500

What is the pH of a solution that is 1000 times more acidic than pure water?

4

chemistry 3

100

what is the bond of hydrogen chloride?

POLAR COVALENT

200

Which metals is a solid at room temperature, yet melts in your hand?

GALLIUM

300

what is the bond in Fluorine?

NONPOLAR COVALENT

400

Which of the following choices are considered to be polymers of amino acids? Are they:

w) nucleotides

x) carbohydrates

y) lipids

z)proteins

PROTEINS

500

the substance that is considered to be the earliest stage in coal formation is

LIGNITE

chemistry 4

100

: Which of the halogens does NOT replace the other halogens from their compounds?

Iodine

200

Which halogen has the largest atomic radius:

At 

ANSWER: ASTATINE

300

In the periodic table which identifies as horizontal row?

Period

400

2.5 liters of a sodium chloride (NaCl) solution contain 5 moles of the solute. What is the molarity?

2 molar

500

After carbon, hydrogen, and oxygen, the next most abundant element in proteins is:

Nitrogen

chemistry5

100

What term is used to describe silver which contains 7.5% copper?

STERLING

200

: In a flame test both lithium and strontium produce various shades of this color. What is this color?

Red

300

What is the common name given to a mixture of three parts of concentrated hydrochloric acid and one part concentrated nitric acid?

: AQUA REGIA

400

Name the state function that represents the heat content of a system.

ENTHALPY

500

Which noble gas has the highest melting point ?

RADON