A polar molecule______________

Does not equally share electrons

Determine the subatomic particles in an atom with an atomic number 9, atomic weight 18, charge of 1−

Protons= 9 , Neutrons=9, Electrons = 10

Give the number of protons, electrons, and neutrons in Boron. It's atomic number is 5 and atomic weight is 10.

Protons= 5, Neutrons= 5, electrons = 5

In Isotopes Carbon- 12 and Carbon- 13, the atoms are different because

They have different numbers of neutrons

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Review of Atoms and Compounds and the Scientific Method

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Questions 17

Answers

1
Ions differ by the number of ___________ and __________
acids and bases
the amount of water
protons and neutrons
protons and electrons
2
Jack is doing an experiment to test the effect of diet soda on blood sugar levels. What's the dependent variable?
The group who drinks water
The type of soda used
The group who drinks soda
The blood sugar levels
3
Sarah is testing How well different plant species tolerate salt water. What is the Independent Variable?
The Soil quality
The plant growth
The salt water
The plants given regular water
4
A polar molecule______________
Does not equally share electrons
Does not include Water
Cannot help form Hydrogen bonds
Can happen with ionic bonds
5
What type of molecule can maintain a stable pH by either donating or accepting H+ in a solution?
Buffer
Acid
Solute
Base
6
Which of the following is true concerning hypotheses?
They are the same as laws
They are just a guess (not based on research)
They are widely accepted ideas about a phenomenon
They are testable
7
A solution with a pH of 7 is
neutral
Has a high H+ concentration
acidic
basic
8
What subatomic particles are negatively charged and are found in shells outside the nucleus of an atom?
isotopes
neutrons
protons
electrons
9
You can use the Scientific Method to test subjects based on faith
True
False
10
Determine the subatomic particles in an atom with an atomic number 9, atomic weight 18, charge of 1−
Protons=9 , Neutrons=9, Electrons = 9
Protons= 10 , Neutrons=9, Electrons = 9
Protons= 9 , Neutrons=9, Electrons = 10
Protons= 18 , Neutrons=8, Electrons = 8
11
Which of the following is an element?
Carbon Dioxide (C02)
Carbon (C)
Water (H20)
Salt (NaCl)
12
Which of the following is an ion?
O-17
Cl-
O- 16
C
13
Give the number of protons, electrons, and neutrons in Boron. It's atomic number is 5 and atomic weight is 10.
Protons= 5, Neutrons= 10, electrons = 5
Protons= 5, Neutrons= 15, electrons = 10
Protons= 5, Neutrons= 5, electrons = 5
Protons= 5, Neutrons= 5, electrons = 0
14
A solution with pH of 5 is
neutral
acidic
basic
covalent
15
In Isotopes Carbon- 12 and Carbon- 13, the atoms are different because
they have different numbers of protons
They have different numbers of electrons
They are not different
They have different numbers of neutrons
16
What is a control (variable) in an experiment?
Your Educated Guess
What you are Testing and Changing
What you are measuring
The Comparison
17
In what type of bonds does one atom donate electrons and the other accept electrons?
Acid/Base
hydrogen
covalent
Ionic

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