What is the atomic number and name of the element represented by C on the periodic table?

• 6, Calcium

• 12, Carbon

• 6, Carbon

• 14, Cobalt

Which type of bond is formed by the sharing of electrons between two atoms?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

The graph below shows the relationship between the speed of a car in miles per hour and its corresponding braking distance, in feet. Approximately how many feet greater will the braking distance be at 50 miles per hour than when the car is traveling at 30 miles per hour.

• 75

• 125

• 175

• 250

Tags

NGSS.MS-PS3-5

What is the pH level of pure water at 25°C?

• 1

• 4

• 7

• 14

In a chemical reaction, which quantity is conserved?

• Mass

• Temperature

• Volume

• Pressure

Tags

NGSS.MS-PS1-5

According to the trend shown by the data, which of the following is closest to the predicted density, in kilograms per cubic meter, for grape juice with a concentration of 60%?

• 1200

• 1250

• 1300

• 1350

Which of the following elements is a noble gas?

• Nitrogen

• Oxygen

• Fluorine

• Neon

Which organelle is known as the powerhouse of the cell?

• Nucleus

• Ribosome

• Mitochondrion

• Endoplasmic reticulum

Tags

NGSS.MS-LS1-2

What is the basic unit of heredity?

• Chromosome

• Gene

• RNA

• Protein

Which of the following statements best describes the association between the elevation and the temperature of locations in the Lake Tahoe Basin?

• A) As the elevation increases, the temperature tends to increase

• B) As the elevation increases, the temperature tends to decrease

• C) As the elevation decreases, the temperature tends to decrease

• D) There is no association between the elevation and the temperature