WorksheetsQ3- CompSci2 Study Guide
Total questions: 50
Worksheet time: 2hrs 56mins
Label the following element from the periodic table:
The number of protons is (a) the (b) .
How many protons does nickel have?
How many electrons does nickel have?
How many neutrons does beryllium have?
Which of the above figures best represents the depiction of an element?
figure W
figure X
figure Y
figure Z
Which of the figures above best represents the depiction of a compound?
figure W
figure X
figure Y
figure Z
When magnesium (Mg) metal is burned in the presence of oxygen gas (O2), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different from the individual properties of magnesium and oxygen because magnesium oxide is
a solution
a mixture
a compound
an element
All of the following are pure substances except…
water (H2O)
air
table salt (NaCl)
table sugar (C6H12O6)
What is another name for a solution?
homogeneous mixture
heterogeneous mixture
substance
compound
A substance in which two or more elements are chemically combined is called a(n)
substance
element
compound
mixture
If a substance consists of only one kind of atom, it is a(an)
Mixture
Solution
Compound
Element
Cereals are made of many different ingredients. Which term describes the cereal?
Compound
Element
Mixture
Solution
A(n) ________________ is something you can find on the periodic table.
Compound
Mixture
Solution
Element
The main result of elements combining is that the substance….
Has similar properties
Shows some similar properties
Has brand new properties
Which of the following choices sequences the parts of matter from smallest to largest correctly?
atom -> element -> compound
atom -> compound -> element
element -> atom -> compound
element -> compound -> atom
In which of the following can you easily see the individual parts?
Homogeneous Compound
Homogeneous Mixture
Heterogeneous Mixture
Heterogeneous Compound
Which box has a higher density?
A
B
They are the same
Put the liquids from the image in order from most dense to least dense.
The amount of water displaced is the same as the volume of the object. What is the VOLUME of the object in the image?
Which answer ranks the objects in the image in order from MOST DENSE to LEAST DENSE?
B, A, C, D
D, C, A, B
A, B, C, D
D, C, B, A
Which of the items listed on the Common Substances table would have the LEAST MASS in a 10 cm3 sample?
Aluminum
Copper
Gold
Using the information in the image, which would have a greater MASS, 10 cm3 of silver or 10 cm3 of gold?
Silver
Gold
If you cut a wooden block in half, each half would have
half the density of the original piece
twice the density of the original piece
the same density as the original piece
no density at all
Sarah is completing a lab in which she is required to identify an unknown substance. She records several observations and measurements of the substance. Which of the following properties will be most helpful to Sarah in making a correct identification?
density
volume
mass
weight
When a helium balloon rises in the air, it expands. If the mass of the balloon remains the same but the volume of the balloon doubles, which claim describes what happens to the density of the helium inside it?
the density triples
the density doubles
the density stays the same
the density decreases by half
A metal coin has certain properties that can be measured. Which property of a coin is different on the moon than it is on Earth?
density
mass
volume
weight
The element silver has both physical and chemical properties, some of which do not change when the size of the sample changes. Which of these choices is a physical property that does not change when the size of the sample changes?
mass
volume
density
weight
If Troy has a 4 cm3 cube of each of these metals, which cube will have the greatest mass?
brass
gold
iron
lead
A tiny piece of sand is very light but sinks in water. Why?
It is more dense than the water.
It is less dense than the water.
It has a high solubility.
It has a low solubility.
Which one changes when an astronaut goes to the moon, her weight or her mass? Why?
mass, because it changes with gravity
weight, because it changes with gravity
mass because there is more matter
weight because there is less matter
The two objects shown are the same size. However, one object is made of wood, and the other object is made of plastic. Which of the following properties of the objects will be the same?
mass
texture
volume
weight
If two objects balance like the ones shown below, what must be true?
Object A has more mass than object B.
Both objects have the same mass.
Object A has more volume than object B.
Both objects have the same volume.
George's science teacher has a mixture of table salt and iron filings. Which of the following would be the best way to separate the salt and the iron filings?
use a magnet to pull the iron filings from the salt
add food coloring to the mixture to make the salt change color
pour them into a beaker of water and see if the iron filings float
heat up the mixture to see if the salt or the iron filings will burn away
Abdul uses sugar cubes to sweeten his tea. He wonders whether stirring his tea will make the sugar cube dissolve faster or slower. If Abdul stirs his tea, what effect does it have on the rate at which the sugar cube dissolves?
The rate that the sugar cube dissolves will speed up.
The rate that the sugar cube dissolves will slow down.
The rate that the sugar cube dissolves will remain the same.
The rate that the sugar cube dissolves will slow down and then stop.
Label the different parts of the atom:
Review the illustration of an atom. How many electrons are found in this atom?
Review the illustration below of an atom. Which two subatomic particles make up the nucleus of an atom?
The periodic table of the elements organizes elements according to their properties. A section of the periodic table is shown.
Which set of elements below is the most similar in chemical behavior?
H, Be, Sc
Fr, Ra, Rf
Ti, V, Cr
Be, Ca, Ra
What do carbon, hydrogen, and oxygen atoms have in common?
the same number of protons
he same number of electrons
neutrons located outside of the nucleus
electrons located outside of the nucleus
The periodic table of the elements organizes elements according to their properties. A section of the periodic table is shown.
Which set of elements below is the most similar in chemical behavior?
H, Be, Sc
Fr, Ra, Rf
Ti, V, Cr
Be, Ca, Ra
There are more than 100 known elements. Which of the following best describes these elements?
Most of the elements are metals.
Most of the elements are nonmetals.
Most of the elements are metalloids.
Most of the elements are noble gases.
The information on the periodic table is organized into boxes, which are placed in rows and stacked in columns. Which of the following does each box represent?
Compound
Group
Period
Element
What do elements in the same group on the periodic table have in common?
They have similar chemical symbols
They have similar chemical properties
They have the same atomic number
They have the same average atomic mass
Which of the following does NOT contain hydrogen?
Water (H2O)
Hydrogen Peroxide (H2O2)
Ammonia (NH4)
Sodium Chloride (NaCl)
Which one is NOT found on the periodic table?
Zirconium
Water
Chlorine
Hydrogen
Explain the difference between periods and groups.
Periods go across and groups go down.
Periods go down and groups go across.
Periods show similar characteristics and groups show differences.
Periods show elements and groups show compounds.
