Put the following metals in order of reactivity. Iron, potassium, copper, zinc, lead, calcium, magnesium, sodium, gold

Most reactive

Least reactive

Complete the equations

metal + oxygen → …………………….

metal + water → ……………………. + …………………….

metal + acid → ……………………. + …………………….

What is formed when magnesium burns in air?

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What happens when copper is put into a beaker of water?

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How do you test for hydrogen gas?

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What is formed when sodium reacts with hydrochloric acid?

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How should metals more reactive than carbon be extracted from their ores?

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Why is gold used in jewelry?

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What is the rule for displacement reactions?

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Tick which reactions would happen

copper

Magnesium

zinc

copper sulfate

Magnesium

sulfate

Zinc Sulfate

Using the reactions from Q10. Choose 1 reaction you’ve ticked and explain why it happens. Choose 1 reaction you haven’t ticked and explain why it doesn’t happen.

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Write word and symbol equations for the first reaction from Q11.

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According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.

What state of matter is ice a. liquid b. element c. solid d. gas

1. an experiment in your science class lists the materials needed for the lab. it is your job, as a lab partner, to measure out 25 ml of distilled water and 2.5 grams of magnesium. what lab measuring tools would you choose to measure each substance and how would you use each tool to get the correct amounts? be sure to describe the process you would follow step-by-step. (5 points) 2.which of the following is an si base unit for measuring mass? (2 points) ampere gram meter pound 3.which of the following is an si base unit for time? (2 points) decades hours minutes seconds 4.which of the following tools should a scientist use to measure an object in milligrams? (2 points) graduated cylinder pan balance tape measure thermometer 4.which of the following tools should a scientist use to measure an object in milligrams? (2 points) graduated cylinder pan balance tape measure thermometer. 5.a pencil beside a metric ruler. the ruler is scaled from 1 centimeter to 10 centimeters, with markings for millimeters between each number. one end of the pencil is beside the 0 on the ruler, and the pencil point is beside the 5. which of the following measurements is accurate but not precise? (2 points) 5 mm 5 cm 50 mm 50 cm 6. which of the following prefixes represents the largest value? (2 points) giga hector kilo milli 7. which of the following types of graphs is best for plotting the percentages of a whole value in a data set? (2 points) bar graph circle graph histogram line graph