R8 Post Test Review

🤖 Robot Routines

100

A robot's lift arm can be programmed using these two measurements.

What are rotations and seconds?

200

A robot's lift arm can be programmed using these two measurements.

What are rotations or seconds?

300

A robot repeats: move right, move up, move left, move down. What shape does it make?

What is a square?

400

Which direction does the robot move first?

Forward (up).

500

List the robot's actions in the correct order from start to finish.

• Move forward 10 inches

• Raise the lift arm for 1 second

• Move forward 1 rotation

• Lower the lift arm for 1 second

• Play a beep (60)

• Play a beep (72)

• Move backward 10 inches

• Start moving forward continuously

• Display an image on the hub for 2 seconds

💻 Coding Concepts

100

This is a step-by-step set of instructions used to solve a problem.

What is an algorithm?

200

In hero.moveUp(2), what is the argument?

What is 2?

300

In hero.moveRight(5), identify the object.

What is hero?

400

In hero.moveRight(5), identify the method.

What is moveRight?

500

Find the three bugs in the code below:

Hero.moveRight(3)
hero.moveleft(2)
hero.moveUp(

What are:
• Hero should be hero
• moveleft should be moveLeft
• hero.moveUp( is missing a closing parenthesis )

🧪 Chemistry Chaos

100

Carbon (C) is an example of this type of substance.

What is an element?

200

Which subatomic particle has no charge?

What is a neutron?

300

Which group of elements has a full outer shell?

What are the noble gases?

400

Is rusting a physical or chemical change?

What is a chemical change?

500

An atom has 11 protons. What is its atomic mass?

What is 22?

🔥 Reaction Station

100

The substances you start with in a chemical reaction are called these.

What are reactants?

200

When balancing a chemical equation, what is the only thing you are allowed to change?

What are coefficients?

300

Balance this equation:

__Mg + __O₂ → __MgO

2Mg + O₂ → 2MgO

400

Balance this equation: 

__Fe + __O₂ → __Fe₂O₃

4Fe + 3O₂ → 2Fe₂O₃

500

Balance __C₃H₈ + __O₂ → __CO₂ + __H₂O

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

🎯 Mixed Madness

100

An atom has 17 protons. What is its atomic number?

What is 17?

200

Which is a chemical change?

A. Cutting paper
B. Melting ice
C. Burning wood
D. Crushing a can

What is C. Burning wood?

300

Which statement is TRUE?

A. Compounds contain only one type of atom.
B. Elements are made of only one type of atom.
C. Electrons determine an atom's identity.
D. You can change subscripts to balance equations.

What is B?

400

A robot executes these commands:

moveRight()
moveUp()
moveLeft()
moveDown()

If the robot repeats this pattern 3 times, how many total movements will it make?

What is 12?

500

A balanced equation has:

• 8 hydrogen atoms
• 2 oxygen atoms

on the reactant side.

If your product side has 8 hydrogen atoms but only 1 oxygen atom, is the equation balanced? Explain why.

No. The number of atoms of every element must be the same on both sides because of the Law of Conservation of Mass.