Atomic Basics
These are the smallest particles of an element that still have the element's properties.
What are atoms?
Do protons have mass?
What is yes?
The starting substances in a chemical reaction are called ____.
What are reactants?
Boiling water is an example of what kind of change? And is an Endothermic or exothermic reaction?
What is a physical change and an endothermic reaction?
If an element has an atomic number of 6 and a mass of 12, how many neutrons are there?
What is 6?
How do you know how many protons are in an atom of a given element?
What is the atomic number?
Electrons have almost no mass, but do have a __ charge.
What is negative?
The substances formed as a result of a chemical reaction are called ____.
What are products?
Is rusting metal a chemical or physical change?
What is a Chemical Change
If an atom has no charge, the electrons and ________ are equal.
What are protons?
Atoms with the same number of protons, but different numbers of neutrons are known as ____.
What are isotopes?
What subatomic particle has no electric charge?
What is a neutron?
A chemical _______ shows the arrangement of atoms to form new substances.
What is equation?
When a chemical reaction has a product that has less energy than the reactants, what kind of a reaction is this? How do you know it happened
If an atom loses an electron, its charge becomes _________.
What is positive?
A group of atoms chemically bonded together are known as a ____.
What is a molecule or compound?
What particles are found in the nucleus of an atom?
What are protons and neutrons?
What law states that matter cannot be created or destroyed?
What is the Law of Conservation of Mass?
Draw a basic graph for an endothermic reaction. Explain how the molecules will be moving differently in the end than in the beginning.
Answers will vary but the energy at the end time should be higher than the start and the molecules will be moving faster, because they have more energy.
What is a valence electron?
The atomic number of carbon is 6. What does this tell us?
It has 6 protons.
The identity of an element is BEST determined by this subatomic particle.
What is a proton?
Mixing vinegar and baking soda absorbs energy. What kind of reaction is this?
What is an endothermic reaction?
Is an ice cube melting a chemical reaction? is it endothermic or exothermic?
What is no it is a physical Change and it is endothermic (because it absorbs heat to change from solid to a liquid)
If an atom loses a proton, will it still be the same element? Why or why not?
What is no? Because the Proton gives the identity and properties of the element. If the number of protons change it becomes a new element (and boom).