1.which one of the following is a pure substance?
A.solution
B.compound
C.colloid
D.mixture

2.the following substances are examples of compound EXCEPT :
A.Hydrogen proxide
B.Ammonia
C.Helium gas
D.Table sugar

3.Which of the following does NOT form a solution?
A.Alcohol and water
B.Salt and water
C.Iron filings and water
D.Sugar and water

4.Metals are good coductors of heat and electricity,Which element does NOT exhibit this property?
A.Aluminum
B.Chromium
C.Sulfur
D.Tungsten

5.Which of the following is not an element?
A.Water
B.Carbon
C.Gold
D.Chlorine

6.Which of the following CONNOT be broken down into simple substance?
A.Chemical formul
B.compound
C.Element
D.Mixture

7.What do you call a series of logical steps that is followed in order to solve a problem?
A.Model method
B.Scientific theory
C.Scientific method
D.Experimental process

8.Which of the following ingridients is a compound?
A.Calcium
B.Calcium chloride
C.Magnesium
D.Mangenese

9.Which refers to scientific procedure undertaken by scientist to test a hypothesis and make a discovery or demonstrate a known fact
A.Theory
B.Inference
C.Conclution
D.Experiment

(pasagot po ty)​