Benchmark #1 Part 1M-OCR - Martino

A thin glass bottle holds 25 ml of liquid and has a mass of 19 grams. Calculate the density.

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A compound differs from a mixture in that the compound:

• A. has two or more identities

• B. has only one identity

• C. can be separated by physical means.

A scientist is given a sample of metal of an unknown element. To identify the element using density, the scientist must first measure the sample's....

• A. temperature and weight

• B. mass and volume

• C. conductivity and electricity

Which change of phase is exothermic?

• A. liquid to solid

• B. solid to gas

• C. liquid to gas

According to the Law of Conservation of Matter, the mass of the product should be the original mass of the reactants.

• A. greater than

• B. less than

• C. equal to

Which of the following is NOT a way that matter changes phase?

• A. melting

• B. mixing

• C. freezing

• D. evaporating

A mixture of water, sand, and dissolved salt. What will occur when sent through a filter paper.

• A. The sand will be separated from the water and the salt.

• B. The salt will be separated from the water and the sand.

• C. No separation will occur.

A Pure Substance that consists of one type of atom which can be found on the Periodic Table.

• A. Compound

• B. Mixture

• C. Element

You have a rock with a volume of 15cm3 and a mass of 45 g. What is its density?

• A. 3g/cm3

• B. 3 grams

• C. 3cm3

List the phases of matter of the sample of lead, in order from occupying the smallest volume to the largest volume.

• A. solid, liquid, gas

• B. liquid, solid, gas

• C. liquid, gas, solid