3755412
Descripción
Test por Karen Moulton, actualizado hace más de 1 año
|
Creado por Karen Moulton
hace alrededor de 9 años
|
|
Pregunta 1
Pregunta
Select all of the metals in this list.
Respuesta
-
hydrogen
-
mercury
-
iron
-
gold
Pregunta 2
Pregunta
Which of these is an alloy?
Respuesta
-
iron
-
hydrogen
-
carbon dioxide
-
steel
Pregunta 3
Pregunta
Most elements are metals.
Respuesta
- True
- False
Pregunta 4
Pregunta
The Periodic Table of Elements is organized by [blank_start]chemical properties and atomic numbers.[blank_end]
Respuesta
-
chemical properties and atomic numbers.
-
physical and chemical properties.
-
number of protons and neutrons.
Pregunta 5
Pregunta
[blank_start]Mixtures[blank_end] are two or more substances together.
Respuesta
-
Mixtures
-
Solutions
-
Compounds
Pregunta 6
Pregunta
Select all of the compounds listed below.
Respuesta
-
Carbon Dioxide
-
Water
-
Sugar
-
Salt
-
O2
-
H2
Pregunta 7
Pregunta
Which of these is a molecule of a compound?
Respuesta
-
O2
-
CO2
Pregunta 8
Pregunta
How many atoms are in this chemical formula: 2NaHCO3?
Respuesta
-
7
-
12
-
9
Pregunta 9
Pregunta
Solutions are mixtures.
Respuesta
- True
- False
Pregunta 10
Pregunta
Sugar is an element.
Respuesta
- True
- False
Pregunta 11
Pregunta
Which of these statements is true for all metals?
Respuesta
-
All metals conduct heat and are lustrous.
-
All metals conduct electricity and heat.
Pregunta 12
Pregunta
Mark all choices that state characteristics of metals. (Does not have to be true for all metals).
Respuesta
-
are lustrous
-
can be bent without breaking
-
can be hammered without breaking
-
can not be mixed
Pregunta 13
Pregunta
When you add [blank_start]oxygen[blank_end] to iron, you get a chemical reaction which gives the product, rust.
Respuesta
-
oxygen
-
hydrogen
Pregunta 14
Pregunta
Another name for rust is iron oxide.
Respuesta
- True
- False
Pregunta 15
Pregunta
Mark all that would be evidence of a chemical reaction.
Respuesta
-
dissolving
-
foaming, bubbling, fizzing
-
clear solution
-
temperature change
-
precipitate forms
Pregunta 16
Pregunta
Mark all that would be evidence of a saturated solution.
Respuesta
-
precipitate forms
-
solute on the bottom
-
temperature change
Pregunta 17
Pregunta
Which of these would supersaturate a solution?
Respuesta
-
cooling it
-
heating it
Pregunta 18
Pregunta
To separate a salt solution, you must use [blank_start]evaporation[blank_end].
Respuesta
-
evaporation
-
a filter
Pregunta 19
Pregunta
The smallest amount of sugar you can have is a/an
Respuesta
-
atom
-
molecule
Pregunta 20
Pregunta
The most abundant element and the most abundant compound in the human body are
Respuesta
-
hydrogen and carbon dioxide.
-
oxygen and water.
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.