Regents Chemistry Review 1

Matter and Measurement

Atomic Structure

Periodic Table

Bonding

Math of Chemistry

100

This is the number of kJ in 400 J.

What is 0.4 kJ?

100

The formula for mass number.

What is protons + neutrons?

100

The classification of the majority of elements on the Periodic Table

What is a metal?

100

The change in energy associated with the following reaction:

I + I --> I₂

What is releasing energy?

100

The sum of the masses of the elements in a compound.

What is the Gram-Formula Mass?

200

The measurement 12,050. grams has this number of significant figures.

What is 5?

200

The charge of an ion with

15 p⁺

16n

18 e^-

What is 3-?

200

An element with similar chemical properties to Calcium.

What are Be, Mg, Sr, Ba, and Ra?

200

How valance electrons form ionic bonds?

What is transferring?

200

These three things are conserved during all chemical reactions.

What are mass, charge, and energy?

300

A mixture separation technique that is used to separate sand from water.

What is filtration

300

An electron in this shell of calcium in the ground state has the most energy.

What is the fourth electron shell of calcium?

300

These elements form colored ions in solution.

What are transition metals?

300

The type of bonding in Ca(OH)₂.

What is BOTH ionic and covalent?

300

The mole ratio of NaOH to Al(OH)₃ in the following equation:

Al₂(SO₄)₃+ 6NaOH --> 2Al(OH)₃ + 3Na₂SO₄

What is 3:1?

400

This classification of matter consists of two or more different elements chemically combined in a fixed proportion.

What is a compound?

400

This experiment established that the nucleus is a small, dense, positive charge surrounded mostly by empty space.

What is Rutherford's Gold Foil Experiment?

400

The trend in electronegativity as you move across a period.

What is increasing electronegativity?

400

The number of electrons shared between two oxygen atoms in an O₂ molecule.

What is 4 electrons?

400

The percent by mass of bromine in the compound AlBr₃.

What is 90%

500

An aqueous solution is classified as this type of mixture.

What is homogeneous?

500

The charge of the nucleus of copper.

What is +29?

500

Two forms of the same element with different structures and different properties.

What are allotropes?

500

The molecular and bond polarity of CO₂.

What are polar bonds and a nonpolar molecule?

500

The sum of the coefficients of the following balanced reaction:

__ Ag₂S + __ Al --> __ Ag + __ Al₂S₃

What is 12?