Vocabulary
What is the smallest unit of matter?
Atom
BONUS QUESTION
You get a free 100 points:)
:)
Which sign indicates gas formation?
Bubbles
What is the difference between reactants and products?
Reactants are what is USED up/reacts during a chemical reaction, the product is what is created
True/False and WHY: All of the atoms that start in a chemical reaction will be present in the product...but they make look a little different.
True
What is formed when two or more atoms chemically combine?
Molecule
An increase/decrease in __________ is a sign of a chemical reaction
Temperature
What are two signs that a chemical reaction is occurring?
Give an example of a product formed from baking soda and vinegar.
CO2 (gas, bubbles)
BONUS QUESTION
Congratulations, you earned free points:)
:)
What do you call the substances that will interact (or be used up) in a chemical reaction?
Reactant
A sudden change in _______ is a sign of a chemical reaction
Color
Is a fire an example of an exothermic or endothermic reaction and WHY?
Exothermic (A fire is an example of an exothermic reaction because it releases heat into the surroundings. )
In a chemical reaction, the reactants "combine" to create something NEW and it is NOT reversible. True/False and WHY?
What is missing, if anything?
2 H + O = H2O
This is balanced, nothing is missing:)
2 H + O = H2O
What is the substance produced from a chemical reaction?
Product
A __ is a type of change in which a new substance is formed.
Define the differences between exothermic and endothermic reactions
An exothermic reaction releases heat energy to its surroundings, causing a temperature increase, while an endothermic reaction absorbs heat energy from its surroundings, causing a temperature decrease
Give me an example of reactants and products in real life (hint: cooking/baking)
Teacher choice
Explain how baking a cake demonstrates the law of conservation (hint: think of reactants like eggs, and product like cake)
Teacher choice:)
Define a chemical reaction
A process that leads to the change from one set of chemical substances to another.
A __ is a solid substance that forms and separates from a solution and may indicate that a chemical reaction has occurred.
Precipitate
Do you think that a firework show is an example of an exothermic or endothermic reaction?
Exothermic (A firework is an example of an exothermic reaction because when ignited, it releases a significant amount of heat and light energy into the surrounding)
What are the reactants and products required to make water (think atoms and molecules)?
Reactants: Hydrogen and Oxygen
Product: Water (H2O)
In a chemical process, atoms regroup into different __ to form new substances with different properties.