What is the science that seeks to understand the behavior of matter?
What is Chemistry
100
Which number is uncertain in 2,401.3?
What is 3
100
Name the three physical states.
What is solid, liquid, and gas
100
Which subatomic particle weighs the less?
What is electrons
100
What are the two types of solids?
What is crystalline and amorphous.
200
What does "Chemical Free" mean?
What is not harmful.
200
How many significant figures are in 0.000450?
What is 3
200
Paint is considered what kind of mixture?
What is heterogeneous
200
What is the difference between the atomic number and the atomic mass?
What is atomic number tells you how many protons are in that element, whereas the atomic mass tells you the average weight of all the atoms of an element.
200
What are changes that alter the composition of the matter?
What is chemical change.
300
What questions do Laws and Theories answer?
What is "What?" (Laws) and "Why?" (Theories)
300
Write 2640000000 in scientific notation.
What is 2.64×10⁹
300
What is the name of the physical change that goes from a solid to a gas?
What is sublimation
300
What are the names of group 1A, 2A, 7A, and 8A?
What is alkali metals, alkali earth metals, halogens, and noble gases.
300
This is when all motions stops.
What is absolute zero
400
What are the two types of observations?
What is quantitative and qualitative.
400
How many grams are in 2.5kg?
What is 2500
400
What kind of reaction happens when a match is burning?
What is exothermic
400
What is a cation, and what is it associated with?
What is ions with a postive charge, and they associate themselves with metals.
400
What is the name of the law that states matter is neither created, nor destroyed?
What is the law of conservation of mass.
500
What are the four steps to the Scientific Method?
What is observation, hypothesis, experiment, and revise/support.
500
What is the mass of lead, which has a density of 11.4g/mL and displaces 20.1mL of water?
What is 299g
500
An unknown metal with a mass of 28g absorbs 58J of heat. Its temperature rises from 31.1°C to 39.9°C. Calculate the heat capacity of the metal.
What is 0.24J/g×°C
500
How many electrons does Zinc have if it has a 2+ charge?
What is 28.
500
What are the two types of energy, and what is their definition?
What is potential energy - stored energy; and kinetic energy - energy of motion.