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Q 1/32
Score 0
A student is creating a model of an atom using the materials shown. Based on the relative masses of subatomic particles, which would be the best material to represent the electrons in the model of an atom?
30
Paper plate
Tennis balls
Rubber bouncy balls
Small plastic beads
Q 2/32
Score 0
Which is a hypothesis?
30
A statement that predicts WHAT will happen in a way that can be expressed with math and mathematical formulas to show relationships
An educated guess based on an observation
A logical explanation based in scientific evidence and data of WHY things happen the way they do
32 questions
Q.
A student is creating a model of an atom using the materials shown. Based on the relative masses of subatomic particles, which would be the best material to represent the electrons in the model of an atom?
1
30 sec
Q.
Which is a hypothesis?
2
30 sec
Q.
The pictures shown are atomic models proposed by various scientists as new information was discovered. Which model is the most recent?
3
30 sec
Q.
How is the modern model of an atom different from the Bohr model?
4
30 sec
Q.
According to the diagram shown, on what letter would a solid be found?
5
30 sec
Q.
If a substance changes from the phase in E to the phase in C, it is becoming—
6
30 sec
Q.
The nucleus of an atom has an overall charge of—
7
30 sec
Q.
Compared to the entire atom, the nucleus of an atom is—
8
30 sec
Q.
If thermal energy is added to a solid, the temperature will _______ and the solid will turn into a _______.
9
30 sec
Q.
Why might an engineer study the basic building blocks of all matter?
10
30 sec
Q.
Which most accurately represents what scientists today believe to be the correct structure of the atom?
11
30 sec
Q.
According to the kinetic molecular theory, if a scientist wanted to slow down particles in matter, she would—
12
30 sec
Q.
The development of the atomic theory illustrates the nature of science because—
13
30 sec
Q.
A scientific journal has an image of an electron cloud model. Which is most likely the caption under the image?
14
30 sec
Q.
A student found an unknown substance with the characteristics shown. What phase of matter is the unknown substance?
15
30 sec
Q.
Which diagram illustrates liquid?
16
30 sec
Q.
All elements in the same row (or period) of the periodic table have the same number of—
17
30 sec
Q.
On the periodic table, the nonmetal element oxygen is most like the nonmetal element—
18
30 sec
Q.
All elements in the same group (or family) on the periodic table contain the same number of—
19
30 sec
Q.
A student found four samples of elements and recorded the characteristics in the data table shown. According to the data, which sample of matter is most likely a metal?
20
30 sec
Q.
A scientist is recording research about an element. From the notes shown, what element is the scientist researching?
21
30 sec
Q.
Isotopes of an element have different—
22
30 sec
Q.
Based on the observations, which element is the particle most likely to be?
23
30 sec
Q.
Reading from left to right across the periodic table, elements—
24
30 sec
Q.
A student was researching an element that is a nonmetal, has 4 energy levels, and has more than 6 valence electrons. Which element is the student researching?
25
30 sec
Q.
Which element has more than 5 valence electrons?
26
30 sec
Q.
The boxes in the periodic table are—
27
30 sec
Q.
A scientist took the notes shown. The scientist is studying—
28
30 sec
Q.
A student made the model shown of a single fluorine atom. What is incorrect about the student’s model?
29
30 sec
Q.
What impacts whether a substance is a solid, liquid, or gas?
30
30 sec
Q.
Which example is NOT a physical property?
31
30 sec
Q.
You find a rock and want to determine its density. You use a triple beam balance and find its mass to be 395.5 grams. You get a graduated cylinder and fill it with 200 mL of water. When you drop the rock into the graduated cylinder, the water level reads 235 mL. Using the density table shown, what is the rock probably made from?
