Physical Science Semester 1 Review Question Preview (ID: 28503)


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A _____________ change occurs when a substance changes composition by forming one or more new substances.
a) endothermic
b) physical
c) chemical
d) exothermic

A(n)___________ is a group of atoms that are held together by chemical forces.
a) molecule
b) atom
c) element
d) compound

Write the following number in scientific notation: 0.00008675
a) 8.675 x 10^5
b) 8675 x 10^-8
c) 8.675 x10^-5
d) 0.8675 x 10^4

_______________ states that the pressure of a gas at a constant volume increases as its temperature increases.
a) Charles's Law
b) Gay-Lussac's Law
c) Boyle's Law
d) Archimedes' Principle

What is the SI unit for pressure?
a) Pa
b) kg
c) mL
d) N

What is the density of a substance that has a mass of 15.6 g and and a volume of 5.8 mL?
a) 2.7 g/mL
b) 90.5 g/mL
c) 0.4 g/mL
d) 9.8 g/mL

The nonsolid state of matter is which the atoms/molecules are free to move past one another is called ____________.
a) solids
b) liquids
c) gases
d) fluids

What state of matter has definite shape and definite volume?
a) solid
b) liquid
c) gas
d) plasma

The kinetic energy of a substance is also known as ___________ energy.
a) potential
b) temperature
c) thermal
d) movement

What determines the speed of particles within a particular substance?
a) speed and temperature
b) weight and mass
c) size and temperature
d) mass and speed

____________ is the capacity to do work.
a) Work
b) Energy
c) Power
d) Force

What happens to energy when ice melts to form water?
a) it is absorbed
b) it is released
c) it is created
d) it is destroyed

A(n) _________ is a factor that changes in an experiment in order to test a hypothesis.
a) variable
b) factor
c) volume
d) scientific method

_______________ is the measure of a straight-line distance between two points.
a) volume
b) mass
c) width
d) length

______________ is the measure of gravitational force exerted on an object.
a) weight
b) mass
c) kilograms
d) volume

The 1st step to the scientific method is...
a) forming a hypothesis
b) observing
c) writing a conclusion
d) forming a question

___________ is the application of science for practical purposes.
a) science
b) technology
c) chemistry
d) physics

The smallest unit of an element that maintains the properties of that element is called a(n) ___________.
a) atom
b) molecule
c) compound
d) chemical formula

A material that can be represented by a chemical formula is a(n) _____________.
a) molecule
b) compound
c) pure substance
d) element

____________ is the measure of the amount of matter in a substance.
a) Mass
b) Weight
c) Volume
d) Force

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