What type of reaction is shown below?

fusion, one new element is formed

a. The number of energy shells or orbits

The Modern AtomicModel states that

Electrons are arranged differently than scientists thought.

What type of reaction is shown below?

fission, two new elements were formed

The Group number gives

a. The number of valence electrons

Which is the correct order of the scientific method?

problem research hypothesis experiment analysis conclusion

Tom went camping with his dad, where theycooked hotdogs on acampfire. One statement is not true

The cooked hotdogs are an example of a physicalchange.

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PS 2nd Quarter Review 3

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Physical Science 2nd Quarter Review Questions #physicalscience #science

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Questions 30

Answers

1
A base turns a red litmus paper
blue
purple
red
orange
2
Which of the following equations represent an exothermic equation?
Reactants + Heat --> Products
Reactants --> Products + Heat
Products --> Reactants + Heat
Products + Heat --> Reactants
3
Which atomic theory model is 3-D?
Rutherford
Modern or Cloud
Thomson
Bohr
4
The following is not a physical change -
breaking a bottle
condensatiion
digesting food
dissolving salt in water
5
When metals lose electrons they become ________ and non-metals become _________
negative positve
positive, negative
6
All of the elements to the right of the staircase are
metals
non-metals
metalloids
ions
7
Which of the following is not a physical change?
casting silver in a mold
boiling water
crumpling a piece of paper
burning wood in a fireplace
8
An acid turns a blue litmus paper
blue
red
purple
orange
9
What type of reaction is shown below?
fusion, two new elements are formed
fusion, one new element is formed
fission, one new element is formed
fission, two new elements are formed
10
The Period tells us
a. The number of electrons in the atom
a. The number of energy shells or orbits
a. The number of protons in the atom
a. The number of valence electrons
11
Metals usually do what with their electrons (Groups 1 and2)?
nothing
gain
lose
share
12
The Modern AtomicModel states that
The electrons move around like planets around the sun.
The atom is + with electrons in it like plums in a pudding
Electrons are arranged differently than scientists thought.
Electrons don't move from shell to shell.
13
All of the elements to the left of the staircase are
non-metals
metalloids
metals
ions
14
What type of reaction is shown below?
fusion, two new elements were formed
fission, two new elements were formed
fusion, no new elements were formed
fission, one new element is formed
15
Ionic Bonding is between
a. non-metals and non-metals
a. metals and metalloids
a. metals and non-metals
a. metalloids and non-metals
16
Density is
liters over grams
mass over length
mass over volume
volume over mass
17
What atomictheory is represented by the atom?
Rutherford
Bohr
Dalton
Thomson
18
Covalent Bondingis between
a. metals and metalloids
a. metals and non-metals
a. metalloids and non-metals
a. non-metals and non-metals
19
The Group number gives
a. The number of electrons in the atom
a. The number of energy shells or orbits
a. The number of valence electrons
a. The number of protons in the atom
20
The following is not a chemical change -
silverware tarnishing
leaves changing colors
boiling water
mixing an acid and a base
21
Non-metals usually do what with their electrons (Groups 16& 17)?
gain
share
nothing
lose
22
2 plants are under a light & w/ the same water & one gets fertilizer, the dependent variable is
Fertilizer
a. Same water, pot, water, and light
light
Plant Growth
23
An acid, like vinegar, and base, like baking soda mixed together make a
an acid and a base
a salt and a water
sodium chloride
a citric acid
24
Which of thefollowing equations represent an endothermic equation?
Products --> Reactants + Heat
Reactants + Heat --> Products
Reactants --> Products + Heat
Products + Heat --> Reactants
25
Which is the correct order of the scientific method?
problem hypothesis independent variable conclusion
problem research hypothesis experiment analysis conclusion
problem research experiment conclusion
question hypothesis experiment analysis conclusion
26
Look at the picture below. What are the abiotic factors?
sand, water, air, rocks, sun
grass, bushes, trees
27
How much of the Earth has fresh water available?
2%
3%
100%
75%
28
Which of the following formulas are not an acid?
H2CO3
HCl
Mg(OH)2
HNO3
29
A solute is put into asolvent & dissolves. This solution is a mixture & is whatkind of change?
An acid and a base
A salt and a water
A physical change
A chemical change
30
Tom went camping with his dad, where theycooked hotdogs on acampfire. One statement is not true
The cooked hotdogs are an example of a chemicalchange.
Cooking a hotdog is endothermic, the campfire is exothermic
The cooked hotdogs are an example of a physicalchange.
The campfire is an example of a chemical change.

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