Atoms and Molecules
Chemistry
Physics
Astronomy
Grab Bag
100
An atom of which element is pictured above?
a. Helium
b. Beryllium
c. Carbon
d. Hydrogen
a. Helium
100
6CO2 + 6H2O -> 6O2 + 6C6H12O6
In the chemical reaction above, how many new substances are produced?
a. 2
b. 4
c. 6
d. 12
In the chemical reaction above, how many new substances are produced?
a. 2
b. 4
c. 6
d. 12
a. 2
100
A crossing guard is to the right of a stop sign. A school bus is to the left of the stop sign. A flowerbed is directly in front of the stop sign.
What is the reference point used to describe positions in the paragraph above?
a. The crossing guard
b. The stop sign
c. The school bus
d. The flowerbed
What is the reference point used to describe positions in the paragraph above?
a. The crossing guard
b. The stop sign
c. The school bus
d. The flowerbed
b. The stop sign
100
What is an astronomical unit?
a. The average distance from Earth to the Moon
b. The average distance from Earth to the Sun
c. The average distance from the Sun to Mars
d. The average distance from the Moon to the Sun
a. The average distance from Earth to the Moon
b. The average distance from Earth to the Sun
c. The average distance from the Sun to Mars
d. The average distance from the Moon to the Sun
b. The average distance from the Earth to the Sun
100
You have a 15 mL container of liquid that weighs 15 grams. According to the density chart above, which liquid is in the container?
a. Vegetable Oil
b. Baby Oil
c. Water
d. Dawn Dish Liquid
c. Water
200
Sodium chloride is a compound made up of the elements sodium (Na) and chlorine (Cl). Which of the following is true about sodium and chlorine in this compound?
a. Sodium retains it's original properties, but chlorine does not
b. Chlorine retains it's original properties, but sodium does not
c. Both sodium and chlorine retain their original properties
d. Neither sodium nor chlorine retains its original properties
a. Sodium retains it's original properties, but chlorine does not
b. Chlorine retains it's original properties, but sodium does not
c. Both sodium and chlorine retain their original properties
d. Neither sodium nor chlorine retains its original properties
d. Neither sodium nor chlorine retains its original properties
200
Which of these describe a chemical reaction?
a. Sugar dissolves in water
b. Liquid water becomes water vapor
c. Sodium combines with chlorine to produce the solid sodium chloride
d. Salt water evaporates, leaving salt crystals
a. Sugar dissolves in water
b. Liquid water becomes water vapor
c. Sodium combines with chlorine to produce the solid sodium chloride
d. Salt water evaporates, leaving salt crystals
c. Sodium combines with chloride to produce the solid sodium chloride
200
A car travels 60 km in the first hour of it's journey, and in the second hour it travels 50 km.
What was the average speed of the car over the two hours?
a. 60 km/h
b. 50 km/h
c. 110 km/h
d.55 km/h
What was the average speed of the car over the two hours?
a. 60 km/h
b. 50 km/h
c. 110 km/h
d.55 km/h
d. 55 km/h
200
Viewed through a small telescope, the four largest moons of Jupiter appear as pinpoints of light on the sides of the planet. Why do Jupiter's moons have this appearance?
a. They all give off their own light
b. They all reflect the light Jupiter produces
c. They all reflect light from Earth
d. They all reflect light from the sun
a. They all give off their own light
b. They all reflect the light Jupiter produces
c. They all reflect light from Earth
d. They all reflect light from the sun
d. They all reflect light from the sun
200
Which of the following compounds would most likely be found in a living organism?
a. NaBO3
b. FeS2
c. KCl
d. C5H5N
a. NaBO3
b. FeS2
c. KCl
d. C5H5N
d. C5H5N
300
Which of the objects above shows the molecular motion of atoms in a gas?
a. The first object
b. The second object
c. The third object
d. None of the objects
c. The third object
300
Water boils at 100 degrees celsius, moving from the liquid to the gas phase
Why is boiling not a chemical change?
a. The particles that make up the substance have not changed, they have only sped up or slowed down
b. The old particles that made up the substance have been replaced by new particles
c. A gas or liquid can only be produced by a physical change
d. Chemical changes do not occur at high temperatures
Why is boiling not a chemical change?
a. The particles that make up the substance have not changed, they have only sped up or slowed down
b. The old particles that made up the substance have been replaced by new particles
c. A gas or liquid can only be produced by a physical change
d. Chemical changes do not occur at high temperatures
a. The particles that make up the substance have not changed, they have only sped up or slowed down.
300
The data for a bicyclist moving along a straight track is graphed above. How far did the bicyclist travel during the time interval from 30 to 40 minutes?
a. 40 meters
b. 400 meters
c. 4 meters
d. 0 meters
b. 400 meters
300
Giant stars tend to be orange or red in color. What does this indicate about these stars?
a. They are cooler than other stars
b. They are hotter than other stars
c. They are closer to Earth than other stars
d. They are farther from Earth than other stars
a. They are cooler than other stars
b. They are hotter than other stars
c. They are closer to Earth than other stars
d. They are farther from Earth than other stars
a. They are cooler than other stars
300
What is a liquid with a pH of 6 considered?
a. A strong base
b. A weak base
c. A strong acid
d. A weak acid
a. A strong base
b. A weak base
c. A strong acid
d. A weak acid
d. A weak acid
400
What elements form the compound ScO?
a. Sulfur and Cobalt
b. Sulfur, Carbon and Oxygen
c. Scandium and Osmium
d. Scandium and Oxygen
a. Sulfur and Cobalt
b. Sulfur, Carbon and Oxygen
c. Scandium and Osmium
d. Scandium and Oxygen
d. Scandium and Oxygen
400
In a chemical reaction, 40 g of substance A combines with 80 g of substance B. How much of substance AB is formed?
a. 100 g
b. 120 g
c. 160 g
d. 180 g
a. 100 g
b. 120 g
c. 160 g
d. 180 g
b. 120 g
400
You put a plate on a couch cushion. What forces are acting on the plate?
a. friction and gravity
b. friction and elastic forces from the cushion
c. gravity and elastic forces from the cushion
d. gravity and tension on the plate
a. friction and gravity
b. friction and elastic forces from the cushion
c. gravity and elastic forces from the cushion
d. gravity and tension on the plate
c. gravity and elastic forces from the cushion
400
Which planet is closest to Earth in size and composition?
a. Mercury
b. Venus
c. Mars
d. The Moon
a. Mercury
b. Venus
c. Mars
d. The Moon
b. Venus
400
The graph above shows the density of water versus temperature.
What is generally true about the density of water as shown on the graph?
a. It decreases as temperature increases
b. It increases as temperature decreases
c. It is not related to temperature
d. It remains constant at different temperatures
a. It decreases as temperature increases
500
Which of these elements would you expect to be the best conductor of electricity?
a. Boron (B)
b. Iridium (Ir)
c. Phosphorus (P)
d. Radon (Rn)
a. Boron (B)
b. Iridium (Ir)
c. Phosphorus (P)
d. Radon (Rn)
b. Iridium (Ir)
500
When nitrogen peroxide breaks down to form nitric oxide and oxygen gas, the temperature of the surrounding environment drops noticeably. Which of the following is true of the chemical reaction?
a. It is exothermic because heat is released
b. It is endothermic because heat is absorbed
c. It is neither endothermic nor exothermic because temperature does not change
d. You cannot tell whether the reaction is absorbing or releasing energy based on the evidence provided
a. It is exothermic because heat is released
b. It is endothermic because heat is absorbed
c. It is neither endothermic nor exothermic because temperature does not change
d. You cannot tell whether the reaction is absorbing or releasing energy based on the evidence provided
b. It is endothermic because heat is absorbed
500
A bicycle and a car both move at the same steady speed around a circular track. Which has the greater force acting on it?
a. The bicycle, because it has less mass
b. The car, because it has more mass
c. There are no forces, because there is no acceleration
d. The forces are the same, because they move at the same speed
a. The bicycle, because it has less mass
b. The car, because it has more mass
c. There are no forces, because there is no acceleration
d. The forces are the same, because they move at the same speed
b. The car, because it has more mass
500
Astronomers have observed the Milky Way galaxy to have a dense core with several rotating arms, as shown in the picture above.
Given these observations, what shape would our galaxy be classified as?
a. Elliptical
b. Spiral
c. Lenticular
d. Irregular
b. Spiral
500
Who is ready for the Science CST?
a. I am!
b. Definitely not me!
c. Maybe someone in the other science teachers classes...
d. Wait... what's the question?
a. I am!
b. Definitely not me!
c. Maybe someone in the other science teachers classes...
d. Wait... what's the question?
A. YOU ARE!