SNC1W Exam Review - Chemistry

Which of the following is a qualitative observation?

• The mass of the rock is 250 grams.

• The solution turned blue when copper sulphate was added.

• The temperature increased by 5°C.

• The volume of water is 100 mL.

Tags

SNC1W.C2.1

Which variable is deliberately changed in a scientific experiment?

• Dependent variable

• Controlled variable

• Independent variable

• Responding variable

Tags

SNC1W.C2.1

According to the particle theory of matter, which statement is correct?

• All particles are the same size.

• Particles are always stationary.

• Particles are always moving.

• Particles do not attract each other.

Tags

SNC1W.C2.1

Which of the following is a mechanical mixture?

• Salt water

• Air

• Salad

• Vinegar

Tags

SNC1W.C2.1

Which of the following is a chemical property?

• Melting point

• Density

• Reactivity with acid

• Colour

Tags

SNC1W.C2.1

Which of the following is a sign that a chemical reaction has occurred?

• Change in state from solid to liquid

• Change in temperature without heating or cooling

• Dissolving sugar in water

• Breaking a glass

Tags

SNC1W.C2.1

Which subatomic particle is found in the nucleus and has no charge?

• Electron

• Proton

• Neutron

• Positron

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SNC1W.C2.3

In the Bohr-Rutherford model, where are electrons located?

• In the nucleus

• In energy levels (shells) around the nucleus

• In the centre of the atom

• In between protons and neutrons

Tags

SNC1W.C2.3

Which subatomic particle has a relative mass close to 1 and a positive charge?

• Electron

• Neutron

• Proton

• Positron

Tags

SNC1W.C2.3

What is the charge of an electron?

• Positive

• Negative

• Neutral

• Double positive

Tags

SNC1W.C2.3