Master the 8th Grade STAAR Science Test Part 4/4

A portion of the Periodic Table is provided here. Which of the following compounds is organic?

• CaH₁₀P₄K₃O₄

• C₆H₁₂O₆

• Fe₂O₃

• NaCl

Tags

NGSS.MS-PS1-1

Which of the following is an example of a physical change that occurs during digestion?

• In the stomach, pepsin turns proteins to amino acids

• In the mouth, enzymes break down carbohydrates

• In the stomach, contractions mix and churn food

• In the intestines, fatty acids are extracted from lipids

It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box in Joules?

• 30J

• 200J

• 10J

• 2000J

Tags

NGSS.MS-PS2-2

The table shows the amount of force four students used to push a box different distances. Which two students performed the same amount of work?

• Student Q, Student R

• Student S, Student T

• Student Q, Student T

• Student R, Student S

Look at the following chart. In which two situation were equal amounts of work done?

• 1 and 2

• 1 and 3

• 1 and 4

• 2 and 4

Tags

NGSS.MS-PS3-5

Earth’s atmosphere contains water vapor and carbon dioxide. These greenhouse gases are important because they?

• Are substances animals need to breathe

• Trap thermal energy in the atmosphere

• Protect against magnetic particles

• Create Earth's gravitational field

Tags

NGSS.MS-ESS3-5

Which particles would you find in the nucleus of an atom?

• Protons and Neutrons

• Electrons and Neutrons

• Electrons only

• Electrons and Protons

Tags

NGSS.MS-PS1-1

What is the mass of an atom with seven protons, seven neutrons, and eight electrons?

• 7

• 8

• 14

• 22

Tags

NGSS.MS-PS1-1

Molybdenum has an atomic number of 42. This means that molybdenum?

• Has a freezing point of 42^oF

• Belongs to group 42

• Can form 42 bonds with other atoms

• Contains 42 protons in its nucleus

Tags

NGSS.MS-PS1-1

A portion of the Periodic Table is shown. Which element would have similar properties to Sulfur?

• Nitrogen

• Oxygen

• Fluorine

• Chlorine