stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Common Assessment #2 Review Flashcards | StudBud
Explore
/
Common Assessment #2 Review
Common Assessment #2 Review
20 terms
·
StudBud Administration
·
189 plays
Periodic Table Questions Chemical Equation Questions Chemical Reaction Questions
Flashcards
20 cards
F
Practice quiz
P
Host live
L
Questions
20
Answers
1
What does the subscript mean?
number of elements
number of atoms
number of molecules
number of protons
2
What does a chemical formula indicate about the substance it represents?
electrons, protons and neutrons
mass and weight
electrons, atomic number, and atomic mass
elements, atoms and molecules
3
In picture what observable evidence is used to show that a chemical reaction has occurred?
precipitate (solid formation)
temperature change
formation of gas
production of paper
4
In picture what observable evidence is used to show that a chemical reaction has occurred?
temperature change
precipitate (solid formation)
formation of gas
production of paper
5
What is the law of conservation of mass and how does it relate to chemical equations?
We can make us much matter as we want.
Matter is awesome-so glad we have a lot of it!
energy cannot be created or destroyed
mass is neither created or destroyed only rearranged
6
What number is a coefficient in the formula, 5H
2
O ?
520
0
5
2
7
What side of this equation is the reactants, 6CO
2
+ 6H
2
O ------> C
6
H
12
O
6
+ 6O
2
?
C6H12O6
C6H12O6 + 6O2
6CO2 + 6H2O ------> C6H12O6 + 6O2
6CO2 + 6H2O
8
What kind of pets does Mrs. Hokamp have?
2 cats
2 snakes
2 fish
2 dogs
9
How many atoms are on the product side of this equation, 6CO
2
+ 6H
2
O ------> C
6
H
12
O
6
+ 6O
2
?
36
18
24
12
10
How many elements are in the chemical formula
C
6
H
12
O
6?
6
3
0
12
11
What do the columns on the Periodic Table of Elements represent?
# of protons and neutrons
energy levels and electrons
Reactivity and valance electrons
# of electrons and electron shells
12
In picture what observable evidence is used to show that a chemical reaction has occurred?
None, only change is state of matter
formation of gas
temperature change
precipitate (solid formation)
13
Physical & chemical properties of atoms represented on the Periodic Table of Elements by..
sub atomic particles
groups and periods
atomic mass
symbols and names
14
I have 7 energy levels...Who am I?
Fr
Mn
Cl
N
15
In picture what form observable evidence is used to show a chemical reaction has occurred?
production of light
precipitate (solid formation)
formation of gas
temperature change
16
What role do coefficients play in balancing a chemical equation?
number of atoms
number of protons
number of molecules
number of elements
17
What do the rows on the Periodic Table of Elements represent?
electrons
protons
energy levels
18
Chemical reaction affect the physical or chemical properties of the reactants & products by...
burning a substance
boiling water bubbling
new substances are formed
changing the color of an object
19
Which element is the least reactive?
Ag
Xe
H
K
20
We all have similar chemical properties...Who are we?
C, Si, Ge, Sn
C, Si, N, P
Na, Mg, Ca, K
B, C, N, O, F
