Metal

Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?

• magnesium

• iron

• aluminium

• copper

Metals create _________ ions, because they give away (lose) electrons.

• positive

• negative

• neutral

Tags

NGSS.MS-PS1-5

Able to be drawn into wire is

• malleable

• insulator

• lustre

• ductile

In chemistry, a displacement reaction is where

• a more reactive metal displaces a less reactive metal from its compound

• two reactive metals join together to form an alloy

• a less reactive metal displaces a more reactive metal from its compound

• a more reactive metal is removed from its compound by a less reactive metal

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Mark the properties shared by metals.​ ​ (a)   ​ (b)   ​ (c)   ​ (d)   ​ ​ (e)  

• luster

• bad conductor of heat

• good conductor of heat

• malleable

• ductile

• bad conductor of electricity

• good conductor of electricity

Elements that have luster, are good conductors of heat and electricity, and are ductile and malleable.

• Metal

• Metalloid

• Non-Metal

Answer explanation

Elements that have luster, are good conductors of heat and electricity, and are ductile and malleable are classified as metals.

What is the primary reason alloys are created instead of using pure metals?

• To decrease the cost

• To improve the appearance

• To enhance the metal's properties

• To increase the weight

Answer explanation

Alloys are created to enhance the metal's properties, such as strength, durability, and corrosion resistance, which are often superior to those of pure metals.

Tags

NGSS.MS-PS1-2

Look at part of the reactivity series? Which one of the following statements is correct?

• zinc is more reactive than magnesium

• copper is the most reactive

• tin is more reactive than lead

• lead is more reactive than aluminium

When metal reacts with liquid water the products are...

• metal hydroxide and oxygen gas

• metal hydroxide and hydrogen gas

• metal oxide and oxygen gas

• metal oxide and hydrogen gas

The list which contains only metals is .......

• aluminium, copper, nitrogen

• iron, oxygen, hydrogen

• iron, silver, aluminium

• iron, sulphur, copper