CFE Practice Test

SC.912.L.18.12 – Which property of water best describes why water can store lots of thermal energy without large changes in temperature? 

• polarity
• high specific heat (4.184 joules per gram degree Celsius) 
• high surface tension
• water’s boiling point is 100˚C

SC.912.N.1.1 – During an experiment, a doctor gives a patient a blue pill each day and tells them to meditate one hour each day. After a week of treatment, the patient feels better. Which of the following choices best describes a valid conclusion the doctor can make about the effectiveness of the blue pill?

• It worked. The medicine is effective.
•  It didn’t work. The medicine is ineffective.
• The meditation was more effective than the blue pill. 
• It’s impossible to tell because there was no control variable.

SC.912.N.1.1 – Jada is trying to determine which fertilizer is best for making her sunflowers grow quickly. She creates an experiment in which she creates four groups of sunflower plants: three that are planted in different brands of fertilizer and one that is planted in ordinary soil from her backyard. She waters each plant the same amount and at the same time of day. After one month has passed, she measures the average height of each group of plants. What type of experimental variable was the choice of different fertilizers?

• control
• dependent
• independent
• physical constant

SC.912.P.8.2 – Which of the following is a physical property of matter?

• pH
• polarity
• melting point
• oxidation reactivity

SC.912.P.8.2 – During an experiment, Marina mixes two ingredients together. As these ingredients mix, she observes that the mixture changes color, creates a gas, and begins to warm up. Based on these clues, what type of overall change has Marina observed? 

• physical
• chemical
• endothermic 
• reversible

SC.912.P.8.4 – Which of the following choices correctly compares and contrasts neutrons and protons? 

• Neutrons are significantly more massive than protons, and are located in the nucleus. 
• Neutrons and protons have roughly the same mass, and are located in the nucleus.
• Neutrons are significantly less massive than protons, and are located outside of the nucleus.
• Neutrons and protons have roughly the same mass, and are located outside of the nucleus.

SC.912.P.8.5 – Which of the following statements is true regarding different elements on the periodic table?

• Different elements in the same row likely have similar chemical properties.
• Different elements in the same row likely have identical physical properties.
• Different elements in the same column likely have similar chemical properties.
• Different elements in the same column likely have identical physical properties.

SC.912.P.8.5 – Which of the following statements correctly describes how elements are organized on the periodic table?

• The farther down the table an element is, the more massive its atoms are.
• The farther down the table an element is, the less dense its atoms are.
• Non-metals are found on the left side of the periodic table, and metals are on the right.
• Elements in the same row on the periodic table have similar chemical properties.

SC.912.P.8.7 – Ethane, C₂H₈, does not dissolve in water easily. Based on this, what types of bonds/forces are most likely to be responsible in holding together the atoms in an ethane molecule?

• ionic bonds
• covalent bonds
• hydrogen bonds
• polar covalent bonds

The chemical formula for glucose is C₆H₁₂O₆. Based on this formula, what type of substance is glucose?

• atom
• element
• compound
• mixture