Particles in liquid are

Joined by much weaker forces than in solid

In liquids we can say

Adopts the shape of the container and its volume is constant

Which is the correct order from less concentrated to the most concetrated?

Diluted-concentrated-saturated-supersaturated

In the picture you can see

Round-bottom flask, erlenmeyer and beaker

Boyle-Mariotte law says that....

Vol. and pressure are inversely proportional

pressure is proportional to temperature at constant volume

volume is proportional to temperature at constant pressure

The number of protons and neutrons

The increase in pressure favours...

solidification, condensation and inverse sublimation

To answer a problem....

you have to write all the steps in the answer sheet

everything that has mass and occupies volume

What is the composition of a compound?

more than two kind of atoms joined

Decantation is used for

liquids with different densities

is any of the different types of matter

Homogeneous mix where solute can be seen with a microscope

studbud

REPASO QUIMICA 2º ESO

50 termsStudBud Administration310 plays

REPASOOOOOOOO

Flashcards50 cardsFPractice quizPHost liveL

Questions 50

Answers

1
What are the names of the following chemical symbols (B,S)?
berilio y azufre
Berilio y Silicio
Boro y azufre
Boro y Selenio
2
Particles in liquid are
Water doesn´t have particles
jooined by much weaker forces than in a gas
Joined by strong forces
Joined by much weaker forces than in solid
3
In liquids we can say
Volume and shape can vary
Adopts the shape of the container and its volume can vary
Adopts the shape of the container and its volume is constant
Shape and volume are constant
4
What would you use to measure lenght?
funnel
bunsen burner
graduated ruler
graduated cylinder
5
protons
have mass but not charge
have positive charge and mass
have no charge but have mass
have positive charge but not mass
6
How many meters are 3 dam?
0,3 m
3 m
30 m
300 m
7
Which is the correct order from less concentrated to the most concetrated?
Concentrated-saturated-diluted-supersaterated
Diluted-concentrated-saturated-superconcentrated
Diluted-concentrated-saturated-supersaturated
Supersaturated-saturated-concentrated-diluted
8
Sieving can be used to separate
solid from solid
gas from liquid
iquid from liquid
solid from liquid
9
In the picture you can see
test tubes volumetric flask and Erlenmeyer
Safety glasses, erlenmeyer and beaker
Beaker, volumetric flask and funnel
Round-bottom flask, erlenmeyer and beaker
10
The mass number of an atom is represented by
A
m
M
Z
11
Cuál de los siguientes elementos no es un gas noble
Radón
Radon
Xenon
Plutón
12
How are atoms in a liquid?
Separated
Not joined at all
Strongly joined
Weakly joined
13
El oro tiene las siguientes valencias
I, II
II, III
I, III, V
I, III
14
How would you write "azufre"
Au
Az
A
S
15
you can measure liquids using
erlenmeyer flask
all the answers are correct
Digital balances
test tubes
16
Z represents
nothing to me
Zyrcón
element
Atomic number
17
Boyle-Mariotte law says that....
Vol and pressure are proportional
If Vol. increases temperature decrease
If pressure increases temperature decreases
Vol. and pressure are inversely proportional
18
What is the name of the proccess from gas to solid
all the answers are correct
inverse sublimation
sublimation
condensation
19
In a solid
Shape and volume are constant
volume can vary and shape is constant
shape and volume can vary
shape can vary but volume is a constant
20
Gay-Lussac law says
pressure volume and temperature can vary
pressure can vary depending on the container
pressure is inversely proportional to temperature
pressure is proportional to temperature at constant volume
21
Charles law says
volume is proportional to temperature at constant pressure
temperature is proportional to volume
Volume is inversely proportional to temperature
pressure is proportional to temperature with constant volume
22
A solution is formed by
colloid and solute
solute and solvent
solvent adn solution
solvent and filtration
23
The picture represents
An element
A mixture
A molecule
A compound
24
Is a technique to separate components of homogeneous mixtures...
magnetic properties
decantation
filtration
chromatography
25
Which of the following answers is the chemical symbol of antimonio
Am
None
Sb
An
26
The formule to calculate density is
D=V/m
D=V+m
D=m/V
D=m*V
27
Chemistry is
useful
fun
All the answers are correct
interesting
28
The mass number is
The number of neutrons and electrons
The number of protons
The number of protons and neutrons
The number of protons and electrons
29
The air that occupies a balloon...
is magnitude
Has mass and volume
Has mass
Has volume
30
The symbol for Gallium in the Periodic Table is
Gl
GA
Ga
GL
31
The increase in pressure favours...
condensation, fusion and vaporisation
sublimation
solidification
solidification, condensation and inverse sublimation
32
Which of the following systems are not heterogeneus
Salad
Hamburguer
Coffe
Bread with seeds
33
To answer a problem....
the units are not important
none are correct
you have to write all the steps in the answer sheet
you have to read the question only once
34
The nucleus of an atom
has protons and neutrons
has the electron cloud
is the external area of the atom
has protons and electrons
35
Elements are made of
chemical bonds
one kind of atoms
any types of molecules
many types of atoms
36
In the lab
We don´t have to run and shout
We have to follow the instructions
All the options are correct
We have to handle the matherial with care
37
The base unit of mass
is km
is kg
is m
is g
38
Matter is
everything that has mass and occupies volume
all you can see
things that can be touched
Any of the different tyoes of matter
39
What is the composition of a compound?
more than two kind of atoms joined
atoms and elements
four kind of atoms
small building blocks
40
The charge os the neutrons is
positive
depends on the type of atom
do not have charge
negative
41
Which of the following proccesses needs a refrigerator?
Decantation
Sieving
Distillation
Evaporation
42
Decantation is used for
solids with magnetic properties
liquids mixed with small particles
solids with different densities
liquids with different densities
43
The 3 states of agregations are
condensation, sublimation and solidification
solis, liquid and evaporation
yougurt, gas and potato
solid, liquid and gas
44
What is substance?
is any of the different types of magnitudes
Is a red element
is everything that have mass
is any of the different types of matter
45
To separate oil and water you can use
Decantation
Crystallization
Filtration
Sieving
46
Which of these answers is a property of a substance that can be measured?
Mass
Direct measurement
Magnitude
Unit of measurement
47
A mix of water and oil is
Homogeneous mixture
hot and solid
heterogeneous mixture
a colloid
48
What is a colloid?
Is the substance in the largest content
Is the substance that disulves in the solvent
Is a uniform mix with pure substances
Homogeneous mix where solute can be seen with a microscope
49
The Boyle-Mariotte formula is
V1*V1=P1*P1
P2*V2=P3*V4
P1*T1=P2*T2
P1*V1=P2*V2
50
In a vaporisation procces we can distinguished
Ecaporation and condensation
Boiling and evaporation
Boiling and melting
Fusion and boiling

REPASO QUIMICA 2º ESO Flashcards | StudBud