Science Ch 9 and 10 Grade 6

Question 1

The air is a mixture of only non-metals elements.

Accepted Answer

True

Question 2

All metals conduct energy/electricity.

Accepted Answer

True

Question 3

You use limewater to prove CO2.

Accepted Answer

True

Question 4

Acid is always corrosive. Burn your skin.

Accepted Answer

False

Question 5

In 1909, a ...... scientist called Soren Sorenson invented a scale called the pH scale.

Accepted Answer

Danish

Question 6

The pH of water is always

Accepted Answer

Is always different.

Question 7

Organic acids come from:

Accepted Answer

Plants and Animals

Question 8

Glass is made from sand and oxygen.

Accepted Answer

True

Question 9

You finds acid in your body. (Wich one is not correct?)

Accepted Answer

Reins

Question 10

Parasols

Accepted Answer

Transparent, Opayue

Question 11

Robert Boyle used a purple cabbage to identify acids and alkalis.

Accepted Answer

False, it was red.

Question 12

Fuels such as coal and oil contain sulfer.

Accepted Answer

True

Question 13

The ...... gas forms bubbles in the mixture and makes it rise to give the cake a light texture.

Accepted Answer

Carbon dioxide

Question 14

Stainless steel is an alloy of iron, carbon and chromium.

Accepted Answer

True

Question 15

Were start the investigative work in chemistry?

Accepted Answer

Islamic countries

Question 16

Effects of acid rain. (which one is not correct?)

Accepted Answer

Kill animals

Question 17

Sulfer with oxygen : sulfer dioxide.

Accepted Answer

True

Question 18

There are over ..... indicators that scientists use.

Accepted Answer

20

Question 19

Carbon and Sulfer are metals.

Accepted Answer

No, those are non-metals.

Question 20

Wood, cloth and plastics are also made from long-chain molecules.

Accepted Answer

True

Question 21

Litmus paper for testing for acids is blue.

Accepted Answer

Always

Question 22

A bee sting is an alkali, a wasp sting is an acid.

Accepted Answer

False

Question 23

Leaching is:

Accepted Answer

Acid rain remove the minerals.

Question 24

One kind of atom is called an element.

Accepted Answer

True

Question 25

Bottle filled with water.

Accepted Answer

Translucent

Science Ch 9 and 10 Grade 6

Questions 25

Science Ch 9 and 10 Grade 6

Questions 25