Compounds
Atoms & The Periodic Table
Measurement & Observations
Random
100
Binary compounds contain how many different types of elements?
Two
100
What is the chemical symbol for hydrogen?
H
100
Observations that use numbers and measurements are called...
Quantitative observations
100
What is a hypothesis?
An educated guess.
200
Compounds are substances/molecules made up of two or more ________________ bonded together.
Elements/different kinds of atoms
200
The periodic table shows and arranges all the chemical ____________.
elements
200
Which target is showing precision but not accuracy?
B
200
Is this a physical or chemical change?
Physical
300
Is salt (NaCl) an element, compound, homogenous mixture, or heterogeneous mixture?
Compound
300
What type of charge do protons have?
Positive
300
Which ruler would give you a more certain (or accurate) measurement?
The bottom one.
300
What are the four states of matter?
Solid, Liquid, Gas, Plasma
400
What is the chemical symbol for is dihydrogen monoxide?
H2O
400
What are the three subatomic particles that make up all atoms?
protons, neutrons, electrons
400
Observations that don't involve measurement or numbers are called _____________ observations
Qualitative
400
All matter is made up of tiny particles called...
Atoms