Brittle

• Metal

• Non metal

• None of them

• Both metal and non-metals

Tags

NGSS.HS-PS1-1

Iron is a good conductor, malleable and magnetic. What type of element is Iron?

• Metal

• Non-metal

• Metalloid

• None of the above

A student tested the conductivity of four elements using an incomplete electrical circuit. When the element is placed in the circuit, the bulb lights up brightly, lights up dimly, or does not light up at all based on the element’s ability to conduct electricity. The table below shows the results of her investigation. Based on the results of the conductivity test, which element is classified as a metal?

Tags

NGSS.MS-PS1-2

The word “luster” refers to which property of matter?

• The ability to conduct electrical or thermal energy

• Capable of being drawn out into thin wires

• The way a surface appears when it reflects light

• Suitable for being shaped by beating or rolling

Tags

NGSS.MS-PS4-2

The table shows the properties of four elements. Which element in the table is classified as a metal?

• Manganese

• Sulfur

• Silicon

• Neon

What is just so typical of NON-metals?

• They don't know what colours go well together.

• Malleable.

• Form acidic oxides.

• Good conductors of electricity.

• High melting points.

Tags

NGSS.HS-PS1-1

A metal which occur in free state

• Gold

• Zinc

• Copper

• Calcium

Tags

NGSS.HS-PS1-1

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.HS-PS1-1

NGSS.HS-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

calcium is more reactive than iron. What will be produced when calcium sulphate and iron are mixed together?

• no reaction happens so the reactants stay the same

• calcium and iron sulphate

• iron sulphate and hydrogen

• water and iron sulphate

  HIDE ANSWER

Tags

NGSS.HS-PS1-2