Grade 9 Science IS MATTER AROUND US PURE?

What is the smallest unit of matter?
Atom
Molecule
Cell
Electron
Which of the following is a chemical change?
Burning wood
Melting ice
Cutting paper
Dissolving salt in water
What is the boiling point of water in Celsius?
Which of the following is an example of a heterogeneous mixture?
Saltwater
Air
Milk
Vinegar
What is the formula for calculating density?
Which of the following is a pure substance?
Salt
Air
Sugar
Soil
What is the atomic number of carbon?
6
12
16
20
8. Which of the following is an example of a physical change?
Boiling water
Rusting iron
Freezing milk
Burning paper
What is the pH value of a neutral solution?
7
1
14
0
What is the process of changing a solid directly into a gas called?
{"name":"Grade 9 Science IS MATTER AROUND US PURE?", "url":"https://www.quiz-maker.com/QPREVIEW","txt":"What is the smallest unit of matter?, Which of the following is a chemical change?, What is the boiling point of water in Celsius?","img":"https://www.quiz-maker.com/3012/images/ogquiz.png"}
Powered by: Quiz Maker