Chemistry Test Review

The element tin (Sn) has an atomic mass of 118.71 and the atomic number 50. Where on the periodic table should this element be placed? 

• a
• b
• c
• d

Which element from this portion of the periodic table chemically reacts in a way that is similar to the way the element krypton (Kr) reacts? 

• Rn
• As
• Br
• C

Group 18 in the periodic table is know as the

• Halogens
• Noble Gases
• Alkaline Earth Metals
• Transition Metals

The molecules in a gas move

• Slow
• Medium
• Fast

Which of the following is an example of a physical change?

• Rusting of metal
• Explosion of fireworks
• Ice melting
• Baking a cake

Which of the following is an example of a chemical change?

• Milk going sour
• Crushing a can
• Chopping wood
• Breaking a glass

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

• True
• Fale

A compound is

• Made up of two or more separate elements
• Made up of a single element
• Heterogenous
• Homogenous

The two types of mixtures are

• Compound and element
• Homogeneous and homozygous
• Heterogeneous and Homogeneous
• Element and substance

The molecules in a solid move

• Slow
• Medium
• Fast