Material properties and Energy changes

What is the symbol of element Calcium?

• Ca

• C

• Cl

• Cc

What is the symbol of the element Oxygen?

• O

• Ox

• On

During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______

• Warm

• Cold

When iron nails get rusty, heat is released.  What type of reaction is this?

• exothermic

• endothermic

What is the symbol of the element Helium?

• H

• He

• Hm

What is the symbol of the element Lithium?

• L

• Lm

• Li

What is the product of the reaction between potassium and hydrochloric acid?

• potassium chloride and hydrogen

• Potassium, chlorine and hydrogen

• Potassium and water

What is the product of hydrogen and oxygen?

• hydroxide

• water

• oxide

What is the symbol of the element fluorine?

• F

• Fl

• Fn

Is photosynthesis an Exothermic or an Endothermic reaction?

• exothermic

• endothermic