Chemistry Quiz

Which of the following is a characteristic of elements?

• A) Composed of two or more different elements chemically combined

• B) Represented by a 1 or 2 letter chemical symbol

• C) Can be separated by physical means

• D) Contain different properties than the elements that make them up

Which of the following is a characteristic of heterogeneous mixtures?

• A) They have a uniform composition

• B) They can be separated by physical means

• C) They are represented by a chemical formula

• D) They are pure substances

How are elements arranged in the periodic table?

• A) By increasing atomic mass

• B) By decreasing atomic number

• C) By increasing atomic number

• D) By alphabetical order

Where is the subscript located in a chemical formula?

• A) Before the symbol of each element

• B) After the symbol of each element

• C) Above the symbol of each element

• D) Below the symbol of each element

Where are products located in a chemical equation?

• A) On the left side of the equation

• B) On the right side of the equation

• C) In the middle of the equation

• D) Above the equation

Which property of water is responsible for the ability of insects to distribute their weight and prevent sinking?

• Cohesion

• Surface Tension

• Adhesion

• Buoyancy

What is the pH value of stomach acid?

• 1

• 7

• 10

• 14

Which of the following substances has a pH value of 8?

• Milk

• Water

• Blood

• Baking Soda

What must be true for a chemical equation to be balanced?

• The total mass of the reactants must equal the total mass of the products

• The total mass of the reactants must be less than the total mass of the products

• The total mass of the reactants must be more than the total mass of the products

• The total mass of the reactants must be zero

What is the total number of atoms in the reactants of the photosynthesis equation?

• 24

• 30

• 36

• 42