Structure of Matter
What is made up of only one type of atom?
Element
Which of the following is a physical property?
A. Flammability
B. Reactivity with acid
C. Color
D. Ability to rust
C. Color
What type of energy is related to the motion of particles?
Kinetic Energy
Why are scientific models useful?
Represent unseen systems/ allow us to see tiny objects!
Plastic is an example of a
Polymer
What holds atoms together in a molecule?
Gravity
What tool is best for measuring mass?
Scale
What happens to the thermal energy of a substance when it melts?
it increases
Which structure is a repeating pattern of atoms or molecules?
Crystal
What is a synthetic material made from crude oil?
Nylon
Water (H₂O) is an example of a...
Compound
How do you calculate the density of a substance?
Mass x Volume
What happens to particle motion when thermal energy is added to a material?
Particles virbrate faster
Which of these describes salt crystals?
Repeating extended structure
What is a disadvantage of synthetic materials?
They can cause pollution
What is the smallest unit of matter?
Atom
How do scientists use chemical properties?
To identify a substance
What happens to the temperature of water when it continues to boil?
It increases rapidly
Draw an oxygen molecule
O-O
What can introduce bias into a scientific experiment?
Opinions in data interpretation
Draw a model that correctly shows the composition of carbon dioxide?
-CO₂
-1 Carbon atom inbetween 2 Oxygen atoms
O-C-O
Which of the following is NOT a physical property?
A. Mass
B. Volume
C. Density
D. Reactivity with acid
D. Reactivity with acid
What happens to thermal energy during condensation?
It decreases
What is an extended structure made of?
Repeating atoms or molecules
What does a lufe cycle assessment include?
How it's made, used, and disposed of!