Semester 1 Test Flashcards
What are the three states of matter?
Liquid, Gas, and Solid.
What is the fourth state of matter and how is it made?
Plasma, gas and energy
What contains only one atom?
Element
What contains multiple kinds of atoms chemically bonded together?
Compound
What contains multiple of the same atoms chemically bonded together?
Molecules
Jason likes milk and cheerios, Emma likes JUST cheerios, those are their:
Pure substance
What is multiple substances NOT bonded together?
Mixture
What is the scientific word for how many atoms are packed in one place?
Density
H on the periodic table is short for?
Hydrogen
He on the periodic table is short for?
Helium
Where can you find plasma in this room?
Fluorescent lights
Where can you find plasma in the real world?
Lightning, and the sun and the stars.
Solids you can’t bend without breaking are called what?
Crystalline
Solids you CAN bend without breaking are called what?
Amorphous
When liquids are attracted to themselves so they hold up an object it’s called?
Surface tension
When water repels it’s called?
Hydrophobic
When water attracts to itself it’s called?
Hydrophilic
Where is 99% of all matter in the world?
The stars
What’s it called when energy enters into something?
Endothermic
What’s an example of endothermic?
Baking brownies, evaporating water, Photosynthesis.
What’s it called when energy exits something?
Exothermic
Give an example of exothermic?
Digest food, decomposition, Corrosion.
When an object can float but only when it disturbs the volume of the fluid - it’s called?
Displacement
What are fluids?
Non- solids, like Gas and liquid.