Unit 1
Perform the following conversion.
0.09 km to dam
9 dam
When the mass of a fluid increases, what happens to the pressure it exerts on objects?
A.) The pressure it exerts on objects fluctuates.
B.) The pressure it exerts on objects increases.
C.) The pressure it exerts on objects is not affected by its mass.
D.) The pressure it exerts on objects decreases.
B
How are the elements in the current periodic table set up?
by atomic number
What is a chemical reaction?
the actual, chemical transformation from one substance into another
Which option describes a gas-liquid solution?
a gaseous solute dissolved in a liquid solvent
Having multiple independent variables increases the changes of having a better experiment because I will have more results. True/False
False
How does a fluid’s mass affect how much pressure it applies on an object?
A fluid that has more mass applies more pressure on an object than a fluid with less mass.
Which answer choice correctly lists the elements found in Period 2 of the periodic table?
A.) sodium, magnesium, aluminum
B.) beryllium, magnesium, calcium
C.) nitrogen, phosphorus, arsenic
D.) oxygen, fluorine, neon
D
When something burns, what type of reaction is typically taking place?
A.) combustion
B.) double-displacement
C.) decomposition
D.) synthesis
A
Which way of dissolving does NOT change the chemical identity of the solute?
dispersion
Which of the following measurements uses a derived unit?
A.) volume
B.) mass
C.) time
D.) length
According to Bernoulli's principle, what type of relationship exists between a fluid's velocity and its pressure?
an inverse relationship
Given the image, how many pairs of electrons do two atoms of oxygen need to share to produce one molecule of O2?
2
Which reaction involves the positively charged parts of two compounds trading places?
double-displacement
What substance is insoluble in water?
quartz