What is matter?
a.) Energy
b.) Anything that has mass and takes up space
c.) The amount of matter something has
b.) Anything that has mass and takes up space
Michael wanted to conduct an experiment to see which area in the school had the most bacteria. He went to the bathroom, gym, and cafeteria.
What is the independent variable?
What is location?
List the three phases of matter in order from the greatest attractive forces between particles to the least attractive forces between particles.
Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy.
Which group are the noble gases in?
(A) Group 13
(B) Group 15
(C) Group 18
(D) Period 18
(D) Period 18
5) One characteristic that salt water and sugar-water have in common is, at room temperature, they are
(A) gases
(B) mixtures
(C) solids
(D) elements
(B) mixtures
What is mass?
a.) Anything that has mass and takes up space
b.) Density
c.) Mass is the amount of matter something has
c.) Mass is the amount of matter something has
Ms. Nixon wanted to see if an increasing amount of salt in the plant will affect the plant height.
What is the dependent variable?
What is plant height?
Name the 3 atomic particles and their charges
1.)
2.)
3.)
1.) protons
2.) Neutrons
3.) Electrons
What is an atomic number?
a.) the number of protons
b.) the mass
c.) how we rank the elements
a.) the number of protons
The diagram below represents liquid water in a pan on a hot plate. The liquid water is boiling and changing into water vapor.
The process of boiling is considered to be a
(A) chemical change, because a new substance is formed
(B) chemical change, because a new substance is not formed
(C) physical change, because a new substance is formed
(D) physical change, because a new substance is not formed
(D) physical change, because a new substance is not formed
What is the smallest unit of matter?
a.) an atom
b.) a molecule
c.) a compound
a.) an atom
Ms. Nixon wanted to see if an increasing amount of salt in the plant will affect the plant height.
List two constants (stay the same to make it fair)
same type of plant, same type of soil, same amount of light, same type of pot, etc.
All matter is made up of
(A) cells
(B) molecules
(C) atoms
(D) compounds
(C) atoms
Why do some chemical symbols not match their names?
a.) it was originally in Spanish
b.) it was originally in Latin
c.) it was originally in French
b.) it was originally in Latin
Name 3 physical properties
a.) flammability, rust, reactivity
b.)Breaking a pencil
c.) color, smell, density
c.) color, smell, density
After a chemical reaction, the mass of the reactant (before reaction) and the mass of the product (after the reaction)
N2 + 3H2 --> 2H3
reactants products
(A) Increases
(B) Decreases
(C) Stays the same
(C) Stays the same
Plant
Salt (g) . Plant Height
0g 12 cm
10g 30 cm
20g 40 cm
What were the results of this experiment?
As the amount of salt increase, the plant height also increased.
What is the difference between an element and a molecule?
a.)Nothing
b.) a molecule contains one atom
c.) a molecule contains two or more atoms
c.) a molecule contains two or more atoms
Based on its position in the Periodic Table, at room temperature, Silver is most likely a
(A) noble gas
(B) nonmetal
(C) metal
(C) metal
Name 3 chemical properties
a.) color, smell, density
b.) flammability, rust, reactivity
c.) Freezing, boiling, melting point
b.) flammability, rust, reactivity