Physical Science Midterm Review Question Preview (ID: 40337)


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Studying the effect of one thing on another in order to test a hypothesis is a(n)
a) exercise
b) experiment
c) constant
d) problem

How many meters are there in 1,865 cm?
a) 0.1865
b) 1.865
c) 18.65
d) 186.5

The variable plotted on the horizontal or x-axis is called the
a) dependent variable
b) independent variable
c)
d)

The process of gathering information through the senses is called
a) analysis
b) observation
c) hypothesis
d) inference

Why do the noble gases NOT form compounds readily?
a) They have empty outer energy levels
b) They have no electrons
c) They have seven electrons in the outer energy levels
d) Their outer energy levels are completely filled with electrons

A chemical bond that occurs when atoms share electrons is a(n) _____ bond.
a) covalent
b) ionic
c) magnetic
d) metallic

What is the name of the comound with the formula NaCl?
a) chlorine sodiate
b) sodium chlorate
c) sodium chloride
d) sodium monocholoride

How many electrons does an atom need to be stable?
a) 2
b) 4
c) 6
d) 8

What is a bond that forms when electrons are transferred from one atom to another?
a) ionic
b) crystal
c) electron
d) atom

What are the charged particle that form when atoms gain or lose electrons?
a) bonds
b) ions
c) atoms
d) valence electrons

What is the charge of an aluminum ion that has 13 protons and 10 electrons?
a) 1+
b) 2+
c) 3+
d) 3-

In Thomson's plum pudding model of the atom, the plums represent
a) atoms
b) protons
c) neutrons
d) electrons

An atom of gold with 79 protons, 79 electrons, and 118 neutrons would have a mass number of
a) 39
b) 158
c) 197
d) 276

The smallest particle into which an element can be divided and still be the same substance is called a(n)
a) nucleus
b) electrons
c) atom
d) neutron

Where are electrons likely to be found?
a) the nucleus
b) electron clouds
c) mixed throughout an atom
d) paths, or energy levels

If an isotope of uranium, uranium-235, has 92 protons, how many protons does uranium-238 have?
a) 92
b) 95
c) 143
d) 146

What particle did J.J. Thompson discover?
a) neutron
b) electron
c) atom
d) proton

Which statement about isotopes is true?
a) They have the same number of protons
b) They have the same number of neutrons
c) They have a different atomic number
d) They have the same mass

How many carbon atoms are in a molecule of glucose, C6H12O6?
a) 3
b) 6
c) 12
d) 24

In a solid, the particles
a) overcome the strong attraction between them
b) vibrate in place
c) slide past one another
d) move independently of one another

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