chemical
equation
equation
What is a chemical equation?
A chemical equation is a way to show a chemical reaction using symbols and formulas. It shows the reactants and the products.
What is a force?
A force is a push or a pull that can change the motion of an object.
What is an energy pyramid?
An energy pyramid is a diagram that shows how energy flows through different levels of a food chain.
What is an ecosystem?
A community of living organisms interacting with nonliving things in an area .
What greenhouses gases?
Gases in the air that trap heat and keep Earth warm.
What are reactants and products?
Reactants are the substances you begin with in a chemical reaction.
Products are the new substances that are formed after the reaction.
What is motion?
Motion is when an object changes its position over time.
What is found at the bottom of an energy pyramid?
Producers, like plants, are at the bottom because they make their own food using sunlight.
What are biotic factors?
These are the living parts of an ecosystem, such as plants and animals .
What is carbon dioxide?
This gas is released when we breathe out and when cars burn fuel.
What does it mean to balance a chemical equation?
Balancing a chemical equation means making sure there are the same number of each type of atom on both sides of the equation.
What is gravity?
Gravity is a force that pulls objects toward each other, especially toward the Earth.
What happens to energy as you move up the pyramid?
Energy decreases as you move up each level of the pyramid.
What is the sun?
The main source of energy for most ecosystems on earth.
What are greenhouse gases?
Driving cars and using electricity from fossil fuels adds more of these gases to the air.
Why is it important to balance chemical equations?
It is important because of the Law of Conservation of Mass, which says matter cannot be created or destroyed in a chemical reaction.
What happens when two forces act on an object in opposite directions?
The object will move in the direction of the stronger force, or not move if the forces are equal (balanced).
What are consumers in an energy pyramid?
Consumers are organisms that cannot make their own food and must eat other organisms for energy.
What is producer?
This type of organism makes its own food and is found at the beginning of a food chain.
What is global warming?
When too many greenhouse gases trap heat, Earth’s temperature goes up.
In the equation: 2H₂ + O₂ → 2H₂O, how many hydrogen atoms are on each side?
There are 4 hydrogen atoms on the left side and 4 hydrogen atoms on the right side.
What is friction?
Friction is a force that slows down or stops motion when two surfaces rub against each other.
Why are there fewer organisms at the top of the energy pyramid?
There is less energy available at higher levels, so fewer organisms can survive there.
Organisms that break down dead matter and recycle nutrients back into ecosystem.
What is the atmosphere?
This layer of Earth holds greenhouse gases and surrounds the planet.