Chemistry Quiz

Copper reacts with oxygen to form copper oxide. How do the properties of copper oxide compare to the properties of copper and oxygen?

• Copper oxide is different from copper and oxygen.
• Copper oxide is similar to both copper and oxygen. 
• Copper oxide is similar only to copper.
• Copper oxide is similar only to oxygen.

Which action provides evidence that elements can combine to form new compounds?

• adding heat to melt a solid
• removing heat to freeze a liquid
• moving a piece of metal with a magnet
• pouring two liquids together to form a solid

Which of the following is an element?

• water
• nitrogen
• carbon dioxide
• NaCl

What does the law of conservation of mass mean during a chemical reaction?

• The total mass of the reactants is greater than the total mass of the products.
• The total mass of the reactants is the same as the total mass of the products.
• The total mass of the reactants is less than the total mass of the products.
• The total mass of the reactants and products cannot be measured.

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

• density
• shape
• color
• flammability

Which of the following is a physical property of copper?

• ductile
• liquid at room temperature
• readily reacts with water to form an acid
• readily reacts with oxygen

On the periodic table, what is a group of elements that are arranged in a vertical column called?

• gas
• family or group
• cluster
• period

Which of these materials is a good conductor of heat and electricity?

• rubber
• glass
• metal
• newspaper

Which element is a metalloid?

• sodium
• arsenic
• neon
• cobalt

Which of the following is the product of a chemical change?

• ice
• rust
• sawdust
• salt water