Basics & Atoms
What is an example of something that has chemicals in in?
Plastics, metals, technology, fertilizer, our bodies, medicine, clothing, cosmetics, the list could go onnnnn.
How is a molecule formed?
When two or more atoms combine
The first science practice is:
Ask Questions and Discuss Problem
True or False: A solid has a definite shape and definite volume.
True. Solids maintain their own shape and do not change volume under normal conditions because their particles are tightly packed.
What is an example of something that uses physics?
Cars, phones, laptop, rocketship, literally any sport, theater flies, the batmobile, the list could go onnnnn.
What is the difference between a molecule and a compound?
A molecule is when two or more atoms combine (could be the same or different) and compound is two or more different atoms combined
The second science practice is:
Develop a model
How do particles behave relative to one another in a solid?
Vibrate in fixed, rigid, positions. (Particles in a solid lack the kinetic energy to break free from each other, so they remain locked in place while vibrating.)
What is the definition of an atom?
The building blocks of all the universe.
The smallest bit of an element that still retains properties of that element.
Which description correctly identifies the components of a water molecule (H2O)?
A.Two carbon atoms and one oxygen atom.
B.One hydrogen atom and two oxygen atoms.
C.Two hydrogen atoms and one oxygen atom.
D.Two oxygen atoms joined together.
Two hydrogen atoms and one oxygen atom!
What is the relationship between an element and an atom? Think about how they relate (Legos)
Elements serve as categories where each element is made of its own kind of atom
True or False: a liquid has a definite shape and definite volume
False. A liquid takes the shape of whatever container it is poured into, but its overall volume stays constant.
What are the particles that make up an atom?
Protons, Neutrons, Electrons
What is the specific composition of a Carbon Dioxide molecule (CO2)?
One carbon atom and two oxygen atoms
How many elements are currently known?
118 Elements
What happens to particles when they are heated? (Multiple answer options)
Increased Speed: Heat energy transfers to the particles, making them zip, slide, or vibrate with more force.
More Spacing: As particles move faster, they push slightly further apart from each other.
Changes of State: If you add enough heat, particles break free from their rigid arrangement: solids can become liquids, liquids can become gases
The periodic table organizes all elements based on what criteria?
Their atomic numbers (the number of protons in an atom's nucleus)
What state of matter has the fastest moving particles?
Gas - gas particles are the fastest, moving rapidly and randomly till they collide.