Unit 3: Chemical Equations and Reactions Practice

Imagine Noah and Olivia are baking a cake, and they have a magical recipe book! How is a chemical equation like this magical recipe book?

• It lists ingredients and steps.

• It shows the final product only.

• It is used for cooking.

• It is written in a book.

In a thrilling science showdown, Sophia and Aiden decided to mix baking soda and vinegar. Can you identify the reactants in this exciting chemical equation?

• The substances that are produced.

• The substances that start a reaction.

• The symbols used in equations.

• The coefficients in a reaction.

Tags

NGSS.MS-PS1-1

During a science experiment, Anika and Ethan stumbled upon mysterious symbols (s), (l), (g), or (aq) in a chemical equation. What magical secrets do these symbols hold?

• Types of chemical bonds.

• States of matter.

• Types of reactions.

• Chemical elements.

Tags

NGSS.MS-PS1-4

Nora and Aria are on a thrilling science adventure! They mix two mysterious chemicals in a bubbling beaker and eagerly watch the magic unfold. What does the arrow (→) in their magical chemical equation signify?

• The start of a reaction.

• The end of a reaction.

• The direction of the reaction.

• The balance of the equation.

Michael and Ava are on a mission to bake the most delicious cookies ever! To succeed, they must ensure the perfect balance of ingredients, just like balancing a chemical equation. So, what exactly are coefficients in a chemical equation?

• Numbers that balance the equation.

• Symbols for elements.

• Indicators of reaction speed.

• Types of chemical reactions.

Tags

NGSS.MS-PS1-5

Avery and Abigail are on a mission in their school lab, mixing mysterious clear potions. Suddenly, the liquid changes color! What secret does a chemical equation reveal about this magical reaction that their eyes cannot see?

• The color of the reactants.

• The exact quantities of substances.

• The temperature of the reaction.

• The smell of the products.

Tags

NGSS.MS-PS1-2

Olivia and Michael are on a thrilling science adventure, observing a bubbling chemical reaction! What exciting insights can their observations reveal about the reaction that a chemical equation might miss?

• The exact number of atoms.

• The physical changes occurring.

• The chemical formula of products.

• The balance of the equation.

Tags

NGSS.MS-PS1-2

Benjamin and Kai were on a mission to discover the secrets of science in their school lab. They decided to mix two mysterious clear potions together. What magical signs would reveal a chemical change?

• A sudden change in temperature, a burst of color, and the appearance of bubbles like a potion brewing.

• A change in size and shape like a magical transformation.

• A shift in mass and volume as if by magic.

• A change in texture and density like a wizard's spell.

Tags

NGSS.MS-PS1-2

In a lively science class, Charlotte and Abigail were having a playful debate about various gadgets. With a curious grin, Charlotte turned to Abigail and asked, "What exactly is a battery?"

• A device that stores and provides electrical energy

• A container for storing chemical waste

• A tool for measuring temperature

• A machine for generating sound

Tags

NGSS.HS-PS3-2

Scarlett and Ethan are on a thrilling science adventure! During their experiment, Scarlett excitedly notices that a mysterious substance is gaining electrons. What is this electrifying process called?

• Gain of electrons

• Loss of electrons

• Neutralization of electrons

• Splitting of electrons

Tags

NGSS.HS-PS1-2