Test
VCS 8 Grade Science - Chapter 3
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Preguntas del test (22)
1Atoms are made up of smaller particles called
- AProtons and electrons
- BProtons and neutrons
- CProton, neutron and the nucleus
- DProtons, neutrons and electrons
- EProtons and the nucleus
2When did scientist realize atoms were made up of smaller particles
- A50 years ago
- B100 years ago
- C150 years ago
- D200 years ago
3Nucleus is
- AThe outter shellof an atom
- BThe group of smaller particles called protons and neutrons
- CHas the electrons in the center
- DIs the plural for neutron
4Neutrons have no charge
- AVerdadero
- BFalso
5What moves rapidly around the nucleus and has a negative charge
- ANeutron
- BElectron
- CProton
- DAtoms
6What does this (+) represent
- ANeutron
- BElectrons
- CProtons
- DAtoms
7Whose model is this
- A1913 Bohr Model - electrons move in specific layers versus randomly
- B1897 Thompson Model - atoms are a positively charged sphere with electron embedded
- C1911 Rutherford Model - atoms is mostly empty space and electrons orbit randomly
- DThe present model - electrons form negatively charged cloud around the nucleus
8Which model is this
- A1913 Bohr Model - electrons move in specific layers versus randomly
- B1897 Thompson Model - atoms are a positively charged sphere with electron embedded
- C1911 Rutherford Model - atoms is mostly empty space and electrons orbit randomly
- DThe present model - electrons form negatively charged cloud around the nucleus
9This image is of Dalton Model which believes the atom has a large sphere in the center with a positive charge
- AVerdadero
- BFalso
10Electrons move ( check all that applies)
- AElectrons with lower energy move in a space near the atoms nucleus
- BElectrons with higher energy move in a space farther from the nucleus
- CMove within a sphere shaped region surrounding the nucleus
- DScientists believe the area the electrons move in is a positive charged cloud
11What is an isotope
- AHave the same number of neutrons and protons and a different number of electrons
- BIs identified by its mass number
- CHave the same number of protons and electrons but different number of neutrons
12What is the sum of the protons and neutrons
- AIsotopes
- BAtomic number
- CElements
- DMass number
13What is the unique number of an element called
- AIstope
- BMass number
- CAtomic number
- DElement number
14Who discovered a set of pattern that applied to all elements
- AJames Chadwick
- BNiels Bohr
- CHantaro Nagaoka
- DDmitri Mendeleev
15What do the numbers represent in this image
- A26 = atomic mass; 55.845 = atomic number
- B26 = atomic number; 55.845 = atomic mass
16The periodic is arranged in horizontal rows called
- ASections
- BGroups
- CPeriods
- DCategories
17The modern periodic table has how many rows and columns
- A 7 rows , 18 columns
- B 7 rows , 16 columns
- C 8 rows , 17 columns
- D 8 rows , 16 columns
18The columns are called groups or families
- AVerdadero
- BFalso
19The zig zag in the periodic table separates metals from gases
- AVerdadero
- BFalso
20What is the chemical symbol
- AConsist of either one or two letters
- BCreated by Dalton
- CIt is usually an abbreviation of the element in English or Latin
- DFound above the atomic number
21Which model is this
- A1897 Thompson Model - atoms are a positively charged sphere with electron embedded
- B1911 Rutherford Model - atoms is mostly empty space and electrons orbit randomly
- CThe present model - electrons form negatively charged cloud around the nucleus
- D1904 - Nagaoka Model has a large sphere with a positive charge
22Who discovered neutrons
- ADmitri Mendeleev
- BNiels Bohr
- CJames Chadwick
- DJJ Thompson
Información
- Descripción
- Test sobre VCS 8 Grade Science - Chapter 3, creado por crystal.clark el 28/09/2014.
- Autor
- crystal.clark
- Idioma
- English
- Visitas
- 23
- Valoración
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