This zigzag line separates this part of the Periodic Table into two sections. What the purpose?

to separate the metals from the nonmetals

The atomic models shown below were developed over time. Which statement is true about models?

Models can be changed as new evidence is discovered.

Which statement is true about the mass of an atom?

the number of particles in its nucleus.

Scientific models serve an important function. Why are scientific models important?

allow people to study things that are hard to see directly

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Atomic Structure & Periodic Table

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Answers

1
This zigzag line separates this part of the Periodic Table into two sections. What the purpose?
to separate the solids from the liquids
to separate the metals from the nonmetals
to separate magnetic elements from nonmagnetic elements
to separate the gases from the solids
2
What element is located in group 7 period 4?
Sodium (Na)
Neon (Ne)
Manganese (Mn)
Rutherfordium (Rf)
3
Which of the following pairs of elements have properties that are the LEAST similar?
Ge and Br
Cl and I
He and Xe
N and P
4
What is the atomic number equal to when completing atomic math?
Number of protons & neutrons
Number of protons & electrons
Atomic Mass
Number of neutrons & electrons
5
Which subatomic particles make up the nucleus of the atom?
Electrons Only
Protons & Electrons
Neutrons & Protons
Neutrons Only
6
Where are metals located on the periodic table?
on the right and in the center
toward the top of the Periodic Table
on the left and in the center
toward the bottom of the Periodic Table
7
Which of the following subatomic particles has a negative charge?
protons
electron
nucleus
neutrons
8
How many protons, neutrons, and electrons are located in a chlorine atom?
P: 35; N: 17; E:17
P: 17; N: 35; P: 17
P: 35; N: 45; E: 35
P: 17; N: 18; E: 17
9
The atomic models shown below were developed over time. Which statement is true about models?
Models can be changed as new evidence is discovered.
Atoms cannot be represented using a model.
There are multiple ways to show the structure of an atom
Scientists cannot agree on which model to use.
10
Which elements in the Periodic Table have similar properties?
two elements in the same group
a metal and a nonmetal
a metal and a noble gas
two elements in the same period
11
Which statement is true about the mass of an atom?
It is NOT related to the # of protons or neutrons.
mass is evenly distributed among its particles.
the number of particles in its nucleus.
depends on the number of electrons it has.
12
The elements in the Periodic Table are ordered according to which of the following?
Atomic number
Melting point
Atomic charge
Conductivity
13
Scientific models serve an important function. Why are scientific models important?
allow people to study things that are hard to see directly
they prove scientific theories by showing details
make it more difficult for scientists to see how things work
they rarely change as the understanding of a system changes.
14
Elements in the PT are arranged into columns and rows. What are columns called in the PT?
sections
stages
groups
levels
15
Elements are made up of small units. What is the name for the smallest unit of an element?
an atom
a compound
a mixture
a molecule

Atomic Structure & Periodic Table Flashcards | StudBud