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WorksheetsPhysical Science Review
Total questions: 133
Worksheet time: 3hrs 0mins
The layer of gases that surrounds the Earth is known as its (a)
Which gas is most abundant in Earth's atmosphere? (a)
Which of the following have been linked to climate change? (a)
The main human activity that releases greenhouse gases is (a)
Some greenhouse gases are naturally present in the Earth's atmosphere (a)
Visible light reaches Earth’s surface while infrared light is trapped as heat. Which characteristic of Earth’s atmosphere causes this to happen? (a)
In the pie chart, the pink section represents which gas in Earth's atmosphere? (a)
The substances listed on the right side of a chemical equation are the (a)
CaCO3 represents a chemical (a)
The substances listed on the left side of a chemical equation are the (a)
A molecule is smaller than an atom. (a)
Fe + O2 -> Fe2O3
Which of the following would provide the evidence that the number of atoms present before a chemical reaction is equal to the number of atoms present after the chemical reaction?
How many IRON (Fe) atoms are in this chemical formula? (a)
What kind of properties can only be observed when a substance changes into a different substance? (a)
Which type of property is the ability to conduct electricity? (a)
Properties that can be observed without changing the identity of the substance. (a)
Which of the following is a sign that a chemical reaction has occurred? (a)
Which of the following is NOT an example of a physical change? (a)
A change where one or more new substances are created. (a)
Fizzing, foaming, and burning are all examples of (a)
Change in density is a physical change. (a)
Rust on an iron bar is an example of chemical change. (a)
Flammability is an example of what property? (a)
Which of the following atomic symbols is written correctly? (a)
Which statement best describes an element? (a)
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is – (a)
This picture represents which of the following? (a)
This picture represents which of the following? (a)
What is the tiniest particle in the entire universe? (a)
What is the name of a single type of atom? (a)
What is the term for combining 2 or more atoms together? (a)
What is the term for combining 2 or more DIFFERENT atoms together? (a)
Are these molecules also compounds? (a)
Are these molecules also compounds? (a)
A pure substance that cannot be broken down into other substances by chemical or physical means. (a)
This diagram represents a (a) .
This diagram represents a (a) .
Can a mixture be separated? (a)
The basic unit of matter is (a)
A substance that contains only one type of atom is a(n) (a)
This picture represents which of the following? (a)
A pure substance (a)
NaHCO3 is an example of (a)
Particles (molecules) in a (a) have more energy than the other states of matter.
The speed of the molecules determines the (a) .
The slower the particles in a substance move, (a)
Thermal energy is...
(a)
Which subatomic particles contribute the most to the mass of an atom? (a)
Which letter represents a proton? (a)
Which letter represents a neutron? (a)
Which letter represents an electron? (a)
Which letter represents the nucleus? (a)
Which subatomic particle has a positive (+) charge? (a)
Which subatomic particle has a negative (-) charge? (a)
Which subatomic particle has a neutral or no charge? (a)
How did Mendeleev arrange the elements? (a)
The horizontal row on the periodic table is called a (a)
The number at the bottom of each square on the periodic table is the (a)
The number at the top of each square on the periodic table is the (a)
Most of the elements on the periodic table are classified as (a) .
This class of elements are sometimes called "semiconductors." (a)
Which group of the periodic table is composed of inert (not reactive) gases? (a)
Elements which are shiny, conduct electricity and heat are called (a)
The atoms along the staircase are called (a)
Vertical columns of elements (these are also known as a "family") - they also have the same number of valence electrons and are known as (a) .
Most noble gases have _______ valence electrons.
1
2
7
8
In what section would Noble Gases be found? (a)
All elements found on the left side of the Periodic Table of the Elements have what properties in common? (a)
What line segment represents only the solid state? (Diagram F) (a)
Between which points is the temperature of the substance remaining constant? (Diagram F) (a)
True or false: melting and freezing occur at the same temperature! (a)
A substance's heating curve is shown in the graph. What is its boiling point? (Diagram B) (a)
Are the particles moving faster or slower as time goes on? (Diagram F) (a)
Is the substance gaining or losing energy? (Diagram D) (a)
Which line segment demonstrates vaporization occurring? (Diagram E) (a)
What phase change is occurring at line segment B-C if the graph is exothermic? (Diagram E) (a)
How long does it take this substance to change from a liquid to a gas? (Diagram E) (a)
What will occur when the substance transitions from B to A? (Diagram A) (a)
What will occur when the substance changes from 1 atm to 30 at a constant temperature of -15oC? (Diagram A) (a)
What will occur when the substance changes from 0o C to 100oC at a constant pressure of 30 atm? (Diagram A) (a)
During a phase change, the temperature (a)
What is the normal boiling point of this substance? (Diagram C) (a)
What is the normal melting point of this substance? (Diagram C) (a)
What is point A? (Diagram C) (a)
**An ice cube feels cold when we hold it. Which of the following best explains why?
Heat moves from our hands into the ice cube.
Cold moves from our hands into the ice cube.
Heat moves from the ice cube into our hands.
Cold moves from the ice cube into our hands.
What type of process is happening as one moves along line segment B toward the right? (Diagram F) (a)
What is the atomic number? (a)
Elements which are shiny, conduct electricity and heat are called (a)
What are the electrons of the "outer shell" of an element called? (a)
If an element does NOT conduct electricity and is NOT shiny or malleable, it is a: (a)
A substance that is generally shiny, can be bent, and often conducts heat and electricity is: (a)
What determines the properties of elements? (a)
What do elements share or transfer to form compounds? (a)
A student is given four solid substances to test. One is a metal. What are properties of metal that student could test for? (a)
Non-metals are (a) conductors of heat.
Which words best describe NON-METALS? (a)
What does "malleable" mean? (a)
The positive particles of an atom are (a)
Particles in an atom that are neutral and have no charge are (a)
The subatomic particle with a negative charge is the (a)
Element or compound?H2O (a)
In the modern periodic table elements are arranged by: (a)
Each column in the periodic table is called a (a)
What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!! (a)
The horizontal row on the periodic table is called a (a)
What is Atomic Mass Number ? (a)
Ozone and Oxygen molecules are the same substance because they both are made only of oxygen atoms. (a)
This table displays (a)
How many atoms make up one molecule of laughing gas?
1
2
3
4
How many atoms of sodium (Na) are in one molecule of baking soda?
1
2
3
4
Consider the picture of the jar holding oil, syrup, and water. It would be easy to pour off the oil to separate from both the syrup and water because the liquids have different (a)
What is the atomic number of this element?
20
60
40
41
Which example below is a chemical reaction? (a)
Synthetic finger joints can replace damaged joints in human hands. In the past, these joints were made out of soft plastic. They were flexible but wore down quickly and required replacement. Scientists are now making synthetic finger joints from different materials.
When choosing a material to make synthetic finger joints, which of these is the least important factor for scientists to consider?
the flexibility of the material
the durability of the material
the ability of the material to be accepted by body systems
the ability of the material to be used in other parts of the body
Heat causes some substances to decompose or break into smaller substances. Atoms are not created or destroyed during this process; they are only rearranged. These reactions can be written as chemical equations.
Which particle diagram best represents the conservation of atoms in this chemical reaction?
