Log inSign up for FREE
Library

40 Final Review

Last updated over 4 years ago
35 questions
Elements, compounds and mixtures
1

Which of the following is classified as an element?

1

How many known elements are there?

1

Which is not a mixture?

Atomic structure and electron configuration
1

How many valence electrons are there in a magnesium atom?

1

How many valence electrons are there in a oxygen atom?

1

How many valence electrons are there in a sodium atom?

1

How many neutrons are in 25Mg?

1

The number of protons in carbon-13 is

1

Elements with the same number of protons that have a different number of neutrons, hence a different atomic mass are known as

1

What is the shape of an s orbital?

1

What is the electron configuration of boron?

1

What is the electron configuration of O2-?

1

JJ Thomson, when he discovered there were negative particles came up with which model of the atom?

Periodic Trends and Periodic Table
1

Which of the following elements has the biggest radius?

1

Which of the following elements has the smallest radius?

1

Which of the following element is in the alkali metal group?

1

Which of the following elements has properties most similar to fluorine?

1

As you move from left to right across the second period of the periodic table:

Bonding, naming and chemical equations
1

What is true about covalent bonds?

1

In a chemical reaction between acetic acid and sodium hydrogen carbonate where sodium acetate, water and carbon dioxide are formed, which are the reactants?

1

Which of the following not true about chemical reactions?

1

Which substance is most likely ionic?

1

What is the charge on a sulfur ion

1

Select the correct name for: BF3

1

Select the correct name for: Mg(NO3)2

1

Choose the correct formula for sodium cyanide

1

Choose the formula for copper (II) hydroxide

1

Which coefficients prove the conservation of mass in the following equation: CO + Fe₂O₃ --> Fe + CO₂

1

Which coefficients prove the conservation of mass in the following equation: Cu + 2AgNO₃ --> 2Ag + Cu(NO₃)₂

The mole, molar mass and conversions
1

The number of hours in 2 years can be calculated by which of the following?

1

What is the molar mass of NaOH?

1

How many moles are in 35.6 grams of iron?

1

How many grams does 2.1 moles of water weigh?

The rest of the questions use this balanced equation. 2AlCl3 + 3Na2SO4 --> Al2(SO4)3 + 6NaCl
1

How many moles of NaCl are produced from 2.0 moles of AlCl3?

1

5.4 grams of NaCl needs how much AlCl3 to react completely?