Chemistry

Descrição

Quick tests about Elements and Atoms: True and False Multiple choice
cayetanalian2002
Quiz por cayetanalian2002, atualizado more than 1 year ago
cayetanalian2002
Criado por cayetanalian2002 mais de 8 anos atrás
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Resumo de Recurso

Questão 1

Questão
What is a atom?
Responda
  • Are the smallest particles of matter, that we cannot break down further by chemical means
  • Are the biggest particles of matter, that we can break down further by chemical means
  • Are the biggest particles of matter, that we cannot break down further by chemical means
  • Are the smallest particles of matter, that we can break down further by chemical means

Questão 2

Questão
A element contains 2 or more kinds of atoms
Responda
  • True
  • False

Questão 3

Questão
What are the symbols of these elements: Lithium, Sodium, Carbon, Nitrogen, Oxygen, Helium, Gold, Silver, Copper
Responda
  • Li, Na, C, N, O, He, Au, Ag, Cu
  • Li, So, C, Ni, O, He, G, S, Co
  • Li, Na, C, N,O, H, Au, S, Cu

Questão 4

Questão
Atoms consist of a nucleus and a cloud of [blank_start]electrons[blank_end] that move around the nucleus. The nucleus is itself a cluster of two kinds of particles, [blank_start]protons[blank_end] and [blank_start]neutrons[blank_end]. All particles in an atom are very light. So their mass is measured in [blank_start]atomic mass[blank_end] units, rather than [blank_start]grams[blank_end]. Protons and electrons also have an [blank_start]electric charge[blank_end]. You can identify an atom by the number of protons it has. The number of protons in the [blank_start]nucleus[blank_end] of an atom is called its protom number (or [blank_start]atomic number[blank_end]). Every [blank_start]atom[blank_end] has an equal number of protons and electrons. Si atoms have no [blank_start]overall charge[blank_end].
Responda
  • electrons
  • protons
  • neutrons
  • atomic mass
  • grams
  • electric charge
  • atomic number
  • overall charge
  • atom
  • nucleus

Questão 5

Questão
Diffusion - The particles mix and spread by colliding with other moving particles, and boucing off in all directions.
Responda
  • True
  • False

Questão 6

Questão
What is an ion?
Responda
  • The particles are atoms or groups of atoms that carry a charge.
  • The particls are atoms or groups of atoms that does not carry a charge

Questão 7

Questão
The partivles in a solid are arrranged in a fixed pattern or lattice
Responda
  • True
  • False

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