Share 7th Grade Science Final Exam Review (Unit 8 & 9)
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What features such as color, state, or melting point are examples of?
Physical properties
What do we call features like acidity or reactivity with water?
Chemical properties
What is the pH of hydrochloric acid?
2
In what type of change are no new substances formed?
Physical change
When iron and sulfur react to form iron sulfide, what are the reactants?
Iron and sulfur
What happens when a substance burns in air?
It reacts with oxygen
What new substance is formed when magnesium burns in air?
Magnesium oxide
What gas is formed when carbon burns in air?
Carbon dioxide
Which state of matter is magnesium oxide at room temperature?
Solid
What gas is produced when magnesium reacts with hydrochloric acid?
Hydrogen
How do you test for hydrogen gas?
Light a splint and listen for a pop
What happens when acids and alkalis are mixed together?
Neutralization
What color is universal indicator when a solution is neutral?
Green
What piece of equipment is used to neutralize an alkali very accurately?
Burette
What products are formed when hydrochloric acid reacts with sodium hydroxide?
Sodium chloride and water
What do we call medicines that help with indigestion by neutralizing stomach acid?
Antacids
