WorksheetsPhysical Science Unit 1
Total questions: 32
Worksheet time: 22mins
Name
Class
Date
1.
Sanding a piece of wood is considered _____.
a)
physical change
b)
chemical change
c)
physical property
d)
chemical property
2.
A piece of metal rusting is considered +______.
a)
physical change
b)
chemical change
c)
physical property
d)
chemical property
3.
What is the correct way to write 203,420 in scientific notation?
a)
2.03420 x 106
b)
2.0342 x 10-5
c)
20342 x 104
d)
2.0342 x 105
4.
How many significant figures are in the number 203,400,000?
a)
5
b)
6
c)
4
d)
9
5.
How many KM are in 2,475cm?
a)
2.475 x 10-8KM
b)
2.475 x 108KM
c)
2.475 x 102KM
d)
2.475 x 10-2KM
6.
How many mL are in 2.3L?
a)
2.3 x 104mL
b)
2.3 x 10-3mL
c)
2,300mL
d)
2.3 x 10-2mL
7.
Of the following variables, which is the one that is measured?
a)
Independent Variety
b)
Dependent Variable
c)
Controlled Variable
d)
Independent Variable
8.
Of the following variables, which is the one that is intentionally changed?
a)
Independent Variable
b)
Controlled Variable
c)
Dependent Variable
d)
Independent Variety
9.
When a measurement gives the same result over and over again it is said to be _____________________.
a)
accurate
b)
precise
c)
exact
d)
accurate and precise
10.
When a measurement is very close to the correct value it is said to be ___________________.
a)
accurate
b)
precise
c)
exact
d)
accurate and precise
11.
The technique of converting between units is called __________________ .
a)
dimensional analysis
b)
decimal moving
c)
multiplication
d)
division
12.
. If you wanted to know the relationship between how much mass and how much space an object takes up you would determine its ______________________.
a)
weight
b)
length
c)
density
d)
none of the above
13.
Which of the following is in correct scientific notation?
a)
4.30x10-3
b)
0.430 x 103
c)
430 x 103
d)
D) All of them
14.
Which of the following states of matter typically has the molecules closest together?
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
15.
Which process is represented by the following description: “sugar is added to water and a sweet liquid results after stirring” ?
a)
melting
b)
Dissolving
c)
evaporation
d)
oxidation
16.
A large number of iron nails were kept in containers in a humid room. Some of the containers were open, and some were air tight. Sixty percent of the nails kept in open containers developed rust. Which of the following would be most important to know in order to draw a conclusion about whether the humidity might have contributed to the rusting?
a)
the percentage of nails weakened by rusting
b)
The precise number of nails kept in air tight containers
c)
the percentage of nails in airtight containers that also developed rust
d)
the precise number of nails kept in the open containers
17.
Which procedure is unsafe when heating a liquid in a test tube?
a)
heating slowly
b)
adding the liquid to the test tube before turning on the flame
c)
using a low energy flame
d)
looking down the test tube to check for boiling
18.
The international system of Units (SI) is a standardized system of measurement used to express fundamental quantities in metric units. Which of the following metric units are used to measure the fundamental quantities of length, mass, and time, respectively, in the SI system?
a)
liter, gram, second
b)
foot, pound, second
c)
meters, grams, seconds
d)
meters, ounces, seconds
19.
A block of Aluminum will be used to determine the density of aluminum. If the block measures 2cm x 3cm x 6cm, what is its volume?
a)
11cm
b)
12 cm3
c)
36 cm
d)
36 cm3
20.
Which of the following is a chemical property of iodine?
a)
violet as a gas
b)
silver black as a solid
c)
reacts with starch to give a dark blue color
d)
a solid at room temperature
21.
The melting of wax is a physical change, yet the burning of wax is a chemical change. What is the essential difference between the physical change and chemical change of wax in a burning candle?
a)
The burning of wax forms new compounds, while the melting of wax does not
b)
A higher temperature is needed to burn wax than to melt wax
c)
Melted wax can be separated into other substances, while solid wax cannot
d)
Melted wax is a different phase of matter than solid wax
22.
An aluminum bar was found to have a mass of 27g. Using water displacement, the volume was measured to be 10mL. What is the density of the Aluminum?
a)
270 g/mL
b)
270 g
c)
2.7 g/mL
d)
2.7g
23.
In normal air, which of the following substances is most common?
a)
nitrogen
b)
oxygen
c)
Carbon dioxide
d)
carbon monoxide
24.
Mike wants to determine the weight of some small stones. He places each of them on a balance that measures the mass of each stone. Mike’s final results should be reported in which metric unit?
a)
grams/cm3
b)
kilograms
c)
liters
d)
Newtons
25.
Janelle is starting a research project on transistors. She goes to a web site that has a link organized by topic. In which of the following topics should Janelle begin her search?
a)
astronomy
b)
biology
c)
earth science
d)
Physics
26.
Which of the following laboratory practices is frequently followed but is NOT necessary for safety?
a)
label containers of reagents
b)
wear safety goggles
c)
review wear the safety equipment is located
d)
rinse all glassware with distilled water before use
27.
On Monday the custodian places an air freshener in the gym. It is a shiny, pink disk that gradually shrinks. Which of the following statements is a valid inference?
a)
the disk is undergoing a chemical change
b)
the disk is undergoing a physical change
c)
The disk is undergoing both a chemical and physical change
d)
The disk is not undergoing neither physical nor chemical changes
28.
An example of an element is ______________.
a)
Salt, NaCl
b)
water, H2O
c)
Sodium, Na
d)
both a and c
29.
A compound cannot be separated by _________________ means.
a)
physical
b)
plasma
c)
chemical
d)
solid
30.
Color, Density, and State of Matter are all _______________ properties.
a)
controlled
b)
physical
c)
dependent
d)
chemical
31.
A gas is originally at 45 atm and 5.6 L and a temperature of 275K. The pressure is raised to 52 atm, and the temperature increased to 301K. What is the new volume?
a)
5.30 L
b)
17.8 L
c)
21,5 L
d)
2.32 L
32.
What is the mass of an object that has a density of 45 g/mL and a volume of 9 mL?
a)
504 g
b)
405 g
c)
120 g
d)
5 g
100 %
