results may agree or not with prediction

What is the mass number?

it's the sum of protons and neutrons

Inorganic chemistry is the study of:

chemical elements and compounds

What are atom's subatomic particles?

protons, neutrons and electrons

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Questions 20

Answers

1
The third step is
results may agree or not with prediction
analize results
make predictions
divulging
2
It is a series of:
circles
bicycles
cycles
classes
3
The seventh step is:
hypothesis
analyze results
make prediction
divulging
4
Chemistry is the study of the composition and properties of:
matter
things
science
energy
5
The sixth step is:
make predictions
divulging
analyze results
results may agree or not with prediction
6
The first step is:
make a prediction
making objective observation
analyze results
hypothesis
7
What is the mass number?
it's the number of protons in an atom
it's the sum of protons and neutrons
it's the sum of protons, neutrons and electrons
it's the sum of electrons and protons
8
Organic chemistry is the study of:
compounds of minerals
components of cars
compounds of materials
compounds of carbon
9
How do we classify matter?
pure and homogeneous substances
elements and compounds
matter
pure substances and mixtures
10
The fifth step is:
analyze results
make hypothesis
divulging
make predictions
11
The fourth step is:
design the experiment
make prediction
hypothesis
divulging
12
Inorganic chemistry is the study of:
compounds
chemical elements and compounds
chemical elements
carbon
13
The second step is:
hypothesis
making a prediction
analyze results
design the experiment
14
In the periodic table, elements are arranged in:
compounds and substances
groups and periods
electrons and mass number
mixtures and pure substances
15
What is an example of omogeneous mixture?
sugar and coffee
water
love
coffee and sand
16
The experimental method is fundamental for:
science
grammar
sport
literature
17
What are atom's subatomic particles?
neutrons and protons
protons
electrons and protons
protons, neutrons and electrons
18
Every cycle is divided into:
3 steps
5 steps
4 steps
7 steps
19
What is an example of pure substance?
sand and water
wood
kitchen salt
air
20
Chemistry can be divided into:
origins and causes
light and heavy
organic and inorganic
organism and micro-organism

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