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Physical Science Q1 2012 11 - 20
Test Description: PS, Q1, 2012, 11 - 20
Instructions: Answer all questions to get your test result.
1) The basic building blocks of matter are called
A
mixtures
B
molecules
C
atoms
D
compounds
2) An element is composed of only one kind of atom. Which of the following is an element?
A
He
B
H20
C
C12H22011
D
NaCl
3) When you add sugar to a glass of iced tea and stir, the sugar looks like it disappears. What really happened was that the tea and sugar formed a
A
molecule
B
solution
C
element
D
compound
4) What's a compound?
A
two or more elements chemically combined
B
two elements mixed together
C
salt combined with water
D
element in a powder state
5) The pH scale tests the acidity of a substance, with values from 0 (acid) to 14 (base). A measurement of 12 on this scale would indicate a
A
strong acid
B
weak base
C
strong base
D
weak acid
6) Distilled water is pH tested to reveal a value of 7. This would mean that distilled water is
A
slightly acidic
B
neutral
C
basic
D
a strong acid
7) A solution with a pH of 7.5 is
A
an acid
B
organic
C
a base
D
neutral
8) An object or organism that has mass, takes up space and is either a liquid, solid or gas is
A
matter
B
a mixture
C
a metal
D
tasty
9) The boiling point is the temperature at which
A
solid changes to gas
B
liquid changes to gas
C
solid changes to liquid
D
gas changes to liquid
10) Which of the following contains more energy?
A
steam
B
ice
C
water that is almost boiling
D
liquid water
*select an answer for all questions
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